Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from the United States to Ottawa from C$ 91

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/12. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YOW
15 Oct — 22 Oct1
1 adult
1 adult, Economy

Cheap flight deals from USA to Ottawa

Keep the following information in mind while searching for USA to Ottawa flight deals. Data was last updated 15 September 2025.

Round-trip from

C$ 322

One-way from

C$ 91

Popular in

January

Cheapest in

April

Average price

C$ 481

Good round-trip deal

C$ 194 or less

Good one-way deal

C$ 119 or less
United Airlines
  • United Airlines
  • 2/10-6/10
  • 2 total stops
  • 23h 56m total
  • USA to Ottawa
Search Deals
Porter Airlines
  • Porter Airlines
  • 11/12
  • Nonstop
  • 3h 23m total
  • USA to Ottawa
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (C$ 39 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals
Price to beat on a round-trip flight from USA to Ottawa.
Search Deals
Price to beat on a one-way flight from USA to Ottawa.
Search Deals

Find flight deals from USA to Ottawa

Cheapest flights from USA to Ottawa
Explore the most affordable flight options available from USA to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 September 2025.

Thu 2/106:28 p.m.RSW - YOW
1 stop15h 30mUnited Airlines
Mon 6/102:48 p.m.YOW - RSW
1 stop8h 26mUnited Airlines
Deal found 15/9C$ 322
Sat 11/107:50 a.m.EWR - YOW
Nonstop1h 41mPorter Airlines
Sat 11/101:25 p.m.YOW - EWR
2 stops7h 35mPorter Airlines
Deal found 14/9C$ 325
Tue 14/106:28 p.m.RSW - YOW
1 stop15h 30mUnited Airlines
Tue 21/106:33 a.m.YOW - RSW
2 stops16h 41mUnited Airlines
Deal found 14/9C$ 327
Wed 29/1011:45 a.m.RSW - YOW
1 stop12h 57mWestJet
Wed 3/125:40 a.m.YOW - RSW
1 stop29h 20mWestJet
Deal found 15/9C$ 338
Sat 4/101:15 p.m.EWR - YOW
1 stop4h 54mPorter Airlines
Mon 6/109:35 a.m.YOW - EWR
1 stop4h 45mPorter Airlines
Deal found 13/9C$ 344
Tue 7/103:05 p.m.EWR - YOW
1 stop4h 29mPorter Airlines
Thu 9/1011:00 a.m.YOW - EWR
1 stop3h 20mPorter Airlines
Deal found 14/9C$ 345
Fri 10/103:05 p.m.EWR - YOW
1 stop5h 29mPorter Airlines
Sun 12/104:05 p.m.YOW - EWR
Nonstop1h 35mPorter Airlines
Deal found 14/9C$ 350
Sat 4/101:15 p.m.EWR - YOW
1 stop4h 54mPorter Airlines
Sun 5/105:15 p.m.YOW - EWR
1 stop4h 55mPorter Airlines
Deal found 13/9C$ 351
Sun 12/103:30 p.m.RSW - YOW
1 stop8h 52mWestJet
Sat 25/105:55 a.m.YOW - RSW
1 stop29h 05mWestJet
Deal found 14/9C$ 351
Wed 15/107:50 a.m.EWR - YOW
1 stop5h 09mPorter Airlines
Tue 21/101:25 p.m.YOW - EWR
1 stop5h 20mPorter Airlines
Deal found 14/9C$ 355
Fri 17/103:30 p.m.RSW - YOW
1 stop8h 52mWestJet
Sat 25/105:55 a.m.YOW - RSW
1 stop29h 05mWestJet
Deal found 14/9C$ 355
Thu 9/106:25 p.m.EWR - YOW
Nonstop1h 40mPorter Airlines
Sat 11/108:25 a.m.YOW - EWR
Nonstop1h 35mPorter Airlines
Deal found 15/9C$ 356

Cheapflights Fare Finder

 
Customize your flight search to find flights from USA to Ottawa that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 15 September 2025.
Use the filters below to find and compare flights from the United States to Ottawa that are best for you.

Fly from

USA

Fly to

Ottawa

Route

Depart

Return

Price

Fort MyersOttawa

RSW - YOW

RSWYOW

Fort Myers SW Florida Intl

Thu 2/10

6:28 p.m.-9:58 a.m.

1 stop15h 30m

Ottawa

Mon 6/10

2:48 p.m.-11:14 p.m.

1 stop8h 26m

C$ 322

Fort MyersOttawa

RSW - YOW

RSWYOW

Fort Myers SW Florida Intl

Wed 15/10

9:10 a.m.-5:06 p.m.

1 stop7h 56m

Ottawa

Tue 21/10

6:33 a.m.-11:14 p.m.

2 stops16h 41m

C$ 327

Fort MyersOttawa

RSW - YOW

RSWYOW

Fort Myers SW Florida Intl

Fri 17/10

6:28 p.m.-9:58 a.m.

1 stop15h 30m

Ottawa

Tue 21/10

6:33 a.m.-11:14 p.m.

2 stops16h 41m

C$ 327

Fort MyersOttawa

RSW - YOW

RSWYOW

Fort Myers SW Florida Intl

Tue 14/10

6:28 p.m.-9:58 a.m.

1 stop15h 30m

Ottawa

Tue 21/10

6:33 a.m.-11:14 p.m.

2 stops16h 41m

C$ 327

Fort MyersOttawa

RSW - YOW

RSWYOW

Fort Myers SW Florida Intl

Wed 29/10

11:45 a.m.-12:42 a.m.

1 stop12h 57m

Ottawa

Wed 3/12

5:40 a.m.-11:00 a.m.

1 stop29h 20m

C$ 338

Fort MyersOttawa

RSW - YOW

RSWYOW

Fort Myers SW Florida Intl

Sun 12/10

3:30 p.m.-12:22 a.m.

1 stop8h 52m

Ottawa

Sat 25/10

5:55 a.m.-11:00 a.m.

1 stop29h 05m

C$ 351

BostonOttawa

BOS - YOW

BOSYOW

Boston Logan Intl

Thu 16/10

8:45 a.m.-12:59 p.m.

1 stop4h 14m

Ottawa

Mon 20/10

5:00 p.m.-6:28 p.m.

Nonstop1h 28m

C$ 356

BostonOttawa

BOS - YOW

BOSYOW

Boston Logan Intl

Fri 17/10

8:45 a.m.-12:59 p.m.

1 stop4h 14m

Ottawa

Mon 20/10

1:25 p.m.-4:51 p.m.

1 stop3h 26m

C$ 361

BostonOttawa

BOS - YOW

BOSYOW

Boston Logan Intl

Sat 18/10

3:50 p.m.-5:18 p.m.

Nonstop1h 28m

Ottawa

Mon 20/10

1:25 p.m.-4:51 p.m.

1 stop3h 26m

C$ 365

BostonOttawa

BOS - YOW

BOSYOW

Boston Logan Intl

Fri 10/10

12:15 p.m.-4:34 p.m.

1 stop4h 19m

Ottawa

Mon 13/10

11:00 a.m.-2:41 p.m.

1 stop3h 41m

C$ 370

Flights are sorted by cheapest round-trip flights first.

Deals found on 15/9

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from USA to Ottawa

Have a flexible travel schedule? Discover the best time to fly to Ottawa from USA with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from the United States to Ottawa

What is the cheapest month to book a flight from USA to Ottawa?

Currently, October is the cheapest month in which you can book a flight from USA to Ottawa (average of C$ 224). Flying from USA to Ottawa in December is currently the most expensive (average of C$ 326). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from US to YOW?

Find hourly flight availability from USA to Ottawa. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 15 September 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from USA to Ottawa as you normally would.

Reviews of airlines servicing Ottawa

Get insights into the airlines that provide service to Ottawa. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ottawa. Reviews last updated 15 September 2025.
Read reviews from past customers who have flown Porter Airlines,United Airlines, andWestJet from the United States to Ottawa. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
7.9
Good
363 reviews
Check prices

Crew

8.6

Boarding

8.1

Entertainment

7.0

Food

7.6

Comfort

7.9

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Porter Airlines
7.9
Good
363 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Crew

8.6

Boarding

8.1

Entertainment

7.0

Food

7.6

Comfort

7.9

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
United Airlines
7.4
Good
8,929 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Crew

8.6

Boarding

8.1

Entertainment

7.0

Food

7.6

Comfort

7.9

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
WestJet
7.2
Good
3,091 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Crew

8.6

Boarding

8.1

Entertainment

7.0

Food

7.6

Comfort

7.9

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Air Canada
7.1
Good
10,000 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Crew

8.6

Boarding

8.1

Entertainment

7.0

Food

7.6

Comfort

7.9

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.

Related info for your journey

Find useful and relevant information for your journey from USA to Ottawa. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ottawa from United States?

    Ottawa (YOW), located 10.6 km from the city centre, is the airport you fly into when you book flights from United States to Ottawa.

  • How long is the flight from USA to Ottawa?

    For as low as C$ 356, United Airlines can have you in Ottawa from USA in 4h 14m. Airlines will cover a distance of 497 km. Both multi-stop and direct flights can be found to your destination and back.

  • What are the cheapest airlines to fly from USA to Ottawa one-way?

    For one-way options, check prices for Porter Airlines. According to our data, you can fly for as low as C$ 91. Users have also found prices from C$ 149 and C$ 251 on United Airlines and Air Canada, respectively.

  • What are the most popular routes from USA to Ottawa?

    The most popular route from USA to Ottawa is Washington, D.C. Dulles Intl - Ottawa. You may also consider Newark - Ottawa or Washington, D.C. Reagan-National - Ottawa.

  • Can I find deals for flights from USA to Ottawa that include hotel bookings?

    Yes. In addition to deals on USA to Ottawa flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from USA to Ottawa?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from USA to Ottawa.

  • Can I find deals for business class flights from USA to Ottawa?

    Yes. Cheapflights offers flight deals from USA to Ottawa by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from USA to Ottawa?

    Currently, October is the cheapest month in which you can book a flight from USA to Ottawa (average of C$ 224). Flying from USA to Ottawa in December is currently the most expensive (average of C$ 326). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
Gatineau
Brockville
Smiths Falls
Perth
Prescott
Pembroke
Wakefield

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for USA to Ottawa

See prices for flight routes from nearby airports that may be better suited for you.
Vancouver Intl to Pearson Intl flights
Abbotsford to Pearson Intl flights
Vancouver Intl to Pierre Elliott Trudeau Intl flights
Vancouver Intl to Hamilton flights
Vancouver Intl to Toronto Island flights
Calgary to Pearson Intl flights
Newark to Pearson Intl flights
LaGuardia to Pearson Intl flights
Pearson Intl to Pierre Elliott Trudeau Intl flights
Pierre Elliott Trudeau Intl to Pearson Intl flights
Halifax to Toronto Island flights
Newark to Toronto Island flights
Winnipeg to Pearson Intl flights
Toronto Island to Pierre Elliott Trudeau Intl flights
LaGuardia to Pierre Elliott Trudeau Intl flights
Pierre Elliott Trudeau Intl to Toronto Island flights
Newark to Pierre Elliott Trudeau Intl flights
Calgary to Pierre Elliott Trudeau Intl flights
John F Kennedy Intl to Pearson Intl flights
Los Angeles to Pearson Intl flights
Halifax to Pearson Intl flights
Halifax to Hamilton flights
Vancouver Intl to Ottawa flights
Calgary to Hamilton flights
Edmonton to Pearson Intl flights
Mexico City to Pearson Intl flights
Boston to Pearson Intl flights
San Francisco to Pearson Intl flights
Dallas/Fort Worth to Pearson Intl flights
Calgary to Region of Waterloo Intl flights
O'Hare Intl to Pearson Intl flights
John F Kennedy Intl to Pierre Elliott Trudeau Intl flights
Calgary to Toronto Island flights
Dulles Intl to Pearson Intl flights
Halifax to Pierre Elliott Trudeau Intl flights
Edmonton to Pierre Elliott Trudeau Intl flights
Vancouver Intl to Region of Waterloo Intl flights
Reagan-National to Pearson Intl flights
Dulles Intl to Pierre Elliott Trudeau Intl flights
Kelowna to Pearson Intl flights
Mexico City to Pierre Elliott Trudeau Intl flights
Boston to Toronto Island flights
Halifax to Region of Waterloo Intl flights
Pearson Intl to Ottawa flights
Seattle to Pearson Intl flights
Abbotsford to Hamilton flights
Abbotsford to Pierre Elliott Trudeau Intl flights
Halifax to Ottawa flights
Winnipeg to Toronto Island flights
Toronto Island to Ottawa flights

Top 3 airlines flying from USA to Ottawa

Discover the top 3 airlines that operate flights from USA to Ottawa. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 15 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 146AverageC$ 509FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapestC$ 164AverageC$ 633FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 204AverageC$ 382FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from USA to Ottawa?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from USA to Ottawa. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from USA to Ottawa?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from USA to Ottawa for you. Better yet — we are completely free to use.

Can Cheapflights find flights from USA to Ottawa with no change fees?

Yes, we can. To see specific flights from USA to Ottawa with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from USA to Ottawa become cheaper?

Yes! Start tracking prices for USA to Ottawa flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.