Find flights
When to book
Airlines
FAQs

Cheap flights from Ottawa to Fremont from C$ 229

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 23/2. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — SFO
26 Feb — 5 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ottawa to Fremont

Enter your travel dates to find the best prices.

Cheapest flights from Ottawa to Fremont
Explore the most affordable flight options available from Ottawa to Fremont. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 January 2026.

Fri 1/56:15 p.m.
YOW
-
SFO
2 stops20h 45m
WestJet
Fri 8/56:00 a.m.
SFO
-
YOW
1 stop8h 20m
WestJet
Deal found 26/1C$ 424
Thu 30/412:25 p.m.
YOW
-
SFO
2 stops12h 30m
WestJet
Fri 8/56:00 a.m.
SFO
-
YOW
1 stop8h 20m
WestJet
Deal found 26/1C$ 442
Wed 29/46:15 p.m.
YOW
-
SFO
2 stops30h 40m
WestJet
Wed 6/51:00 p.m.
SFO
-
YOW
2 stops25h 35m
WestJet
Deal found 26/1C$ 448
Fri 1/56:15 p.m.
YOW
-
SFO
2 stops20h 45m
WestJet
Mon 4/56:00 a.m.
SFO
-
YOW
1 stop8h 20m
WestJet
Deal found 26/1C$ 453
Fri 1/57:00 a.m.
YOW
-
SFO
1 stop8h 20m
Multiple Airlines
Mon 4/56:00 a.m.
SFO
-
YOW
1 stop8h 20m
Multiple Airlines
Deal found 26/1C$ 466
Mon 9/37:15 p.m.
YOW
-
SFO
2 stops19h 55m
WestJet
Sun 15/31:00 p.m.
SFO
-
YOW
2 stops26h 23m
WestJet
Deal found 26/1C$ 470
Wed 18/26:40 a.m.
YOW
-
SFO
1 stop9h 05m
Multiple Airlines
Mon 23/210:39 p.m.
SFO
-
YOW
1 stop22h 46m
Multiple Airlines
Deal found 26/1C$ 471
Thu 19/26:40 a.m.
YOW
-
SFO
1 stop9h 05m
Multiple Airlines
Mon 23/22:25 p.m.
SFO
-
YOW
2 stops31h 14m
Multiple Airlines
Deal found 26/1C$ 478

Find flight deals from Ottawa to Fremont

Keep the following information in mind while searching for Ottawa to Fremont flight deals. Data was last updated 27 January 2026.

Round-trip from

C$ 424

One-way from

C$ 229

Popular in

December

Cheapest in

May

Average price

C$ 500
WestJet
  • WestJet
  • 1/5-8/5
  • 3 total stops
  • 29h 05m total
  • Ottawa to Fremont
Search Deals
Porter Airlines
  • Porter Airlines
  • 23/2
  • 1 total stop
  • 9h 05m total
  • Ottawa to Fremont
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (C$ 106 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ottawa to Fremont 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 27 January 2026.
Use the filters below to find and compare flights from Ottawa to Fremont that are best for you.

Fly from

Ottawa

Fly to

Fremont

Route

Depart

Return

Price

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Fri 1/5

6:15 p.m.-12:00 p.m.

2 stops20h 45m

San Francisco

Fri 8/5

1:00 p.m.-12:30 p.m.

2 stops20h 30m

C$ 434

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Thu 30/4

12:25 p.m.-9:55 p.m.

2 stops12h 30m

San Francisco

Fri 8/5

6:00 a.m.-5:20 p.m.

1 stop8h 20m

C$ 442

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Mon 9/3

7:15 p.m.-12:10 p.m.

2 stops19h 55m

San Francisco

Sun 15/3

1:00 p.m.-6:23 p.m.

2 stops26h 23m

C$ 470

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Thu 19/2

6:40 a.m.-12:45 p.m.

1 stop9h 05m

San Francisco

Mon 23/2

10:39 p.m.-12:25 a.m.

1 stop22h 46m

C$ 471

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Wed 18/2

6:40 a.m.-12:45 p.m.

1 stop9h 05m

San Francisco

Mon 23/2

10:39 p.m.-12:25 a.m.

1 stop22h 46m

C$ 471

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Thu 30/4

6:45 a.m.-12:45 p.m.

1 stop9h 00m

San Francisco

Tue 5/5

1:20 p.m.-12:25 a.m.

1 stop8h 05m

C$ 482

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Wed 29/4

5:55 a.m.-12:00 p.m.

2 stops33h 05m

San Francisco

Thu 7/5

1:00 p.m.-12:30 p.m.

2 stops20h 30m

C$ 497

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Mon 9/3

6:45 a.m.-12:42 p.m.

1 stop8h 57m

San Francisco

Sun 15/3

10:15 a.m.-6:23 p.m.

2 stops29h 08m

C$ 500

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Thu 30/4

5:55 a.m.-12:45 p.m.

1 stop9h 50m

San Francisco

Mon 4/5

9:33 p.m.-12:20 a.m.

2 stops23h 47m

C$ 509

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Thu 30/4

6:45 a.m.-12:45 p.m.

1 stop9h 00m

San Francisco

Thu 7/5

1:20 p.m.-12:25 a.m.

1 stop8h 05m

C$ 519

Flights are sorted by cheapest round-trip flights first.

Deals found on 25/1

Showing 1-10 of 21 results
1
2
3

Best time to book a flight from Ottawa to Fremont

Have a flexible travel schedule? Discover the best time to fly to Fremont from Ottawa 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 Ottawa to Fremont

How far ahead should I book a flight from Ottawa to Fremont?

Use this chart to determine the optimal time to book a round-trip flight from Ottawa to Fremont. Price data was last updated on 23 January 2026.

The price you pay for your flight from Ottawa to Fremont may vary depending on when you book. For the best chance of a lower fare, look to book 83 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, April is the cheapest month in which you can book a flight from Ottawa to Fremont (average of C$ 296). Flying from Ottawa to Fremont in December is currently the most expensive (average of C$ 438). 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.

Reviews of airlines servicing Fremont

Get insights into the airlines that provide service to Fremont. 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 Fremont. Reviews last updated 27 January 2026.
Check out reviews from past customers who have flown with Porter Airlines,United Airlines, andWestJet from Ottawa to Fremont to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
7.9
Good
412 reviews
Check prices

Entertainment

6.9

Comfort

7.9

Crew

8.6

Boarding

8.2

Food

7.5

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Porter Airlines
7.9
Good
412 reviews
Porter Airlines
7.9
Good
412 reviews
Check prices

Entertainment

6.9

Comfort

7.9

Crew

8.6

Boarding

8.2

Food

7.5

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
United Airlines
7.4
Good
9,208 reviews
Porter Airlines
7.9
Good
412 reviews
Check prices

Entertainment

6.9

Comfort

7.9

Crew

8.6

Boarding

8.2

Food

7.5

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
WestJet
7.2
Good
3,251 reviews
Porter Airlines
7.9
Good
412 reviews
Check prices

Entertainment

6.9

Comfort

7.9

Crew

8.6

Boarding

8.2

Food

7.5

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Air Canada
7.1
Good
10,666 reviews
Porter Airlines
7.9
Good
412 reviews
Check prices

Entertainment

6.9

Comfort

7.9

Crew

8.6

Boarding

8.2

Food

7.5

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

Related info for your journey

Find useful and relevant information for your journey from Ottawa to Fremont. 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 from for flights from Ottawa to Fremont?

    Ottawa (YOW) is the airport you will fly out of if you book a flight from Ottawa to Fremont. You should not have trouble finding flights to Fremont from Ottawa; the airport handles an average of 0 outbound flights to Fremont per day. You should also have plenty of airline options to choose from since 4 airlines have flights from the Ottawa airport to Fremont. It is only a 10.6 km journey to Ottawa (YOW) from Ottawa’s city centre.

  • How long is the flight from Ottawa to Fremont?

    Airlines like WestJet fly from Ottawa to Fremont in about 20h 45m. The time it takes to get you to your destination can typically vary by up to . Ottawa and Fremont are separated by a distance of 3925 km.

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

    The cheapest airlines for a one-way flight from Ottawa to Fremont are Porter Airlines (C$ 184), WestJet (C$ 204), and United Airlines (C$ 229).

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ottawa to Fremont 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 Ottawa to Fremont?

    Currently, April is the cheapest month in which you can book a flight from Ottawa to Fremont (average of C$ 296). Flying from Ottawa to Fremont in December is currently the most expensive (average of C$ 438). 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

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 Ottawa to Fremont

See prices for flight routes from nearby airports that may be better suited for you.
Pearson Intl to Las Vegas flights
Pearson Intl to Los Angeles flights
Pearson Intl to San Francisco flights
Pierre Elliott Trudeau Intl to Las Vegas flights
Pierre Elliott Trudeau Intl to Los Angeles flights
Toronto Island to Las Vegas flights
Pierre Elliott Trudeau Intl to San Francisco flights
Pearson Intl to San Diego flights
Pearson Intl to Ontario flights
Toronto Island to Los Angeles flights
Ottawa to Las Vegas flights
Pierre Elliott Trudeau Intl to San Diego flights
Hamilton to Las Vegas flights
Pearson Intl to Palm Springs flights
Toronto Island to San Francisco flights
Ottawa to Los Angeles flights
Region of Waterloo Intl to Las Vegas flights
Pierre Elliott Trudeau Intl to Ontario flights
Pearson Intl to Santa Ana flights
Region of Waterloo Intl to Los Angeles flights
Pearson Intl to Sacramento flights
Hamilton to Los Angeles flights
Region of Waterloo Intl to San Francisco flights
Pearson Intl to San Jose flights
Hamilton to San Francisco flights
Pearson Intl to Oakland flights
Ottawa to San Francisco flights
Pierre Elliott Trudeau Intl to Santa Ana flights
Pearson Intl to Burbank flights
Hamilton to San Diego flights
Ottawa to San Diego flights
Toronto Island to San Diego flights
Hamilton to Palm Springs flights
Ottawa to Palm Springs flights
Pearson Intl to Reno flights
Pearson Intl to Fresno flights
London to Las Vegas flights
Sault Ste Marie to Las Vegas flights
Region of Waterloo Intl to Palm Springs flights
Pierre Elliott Trudeau Intl to Sacramento flights
Ottawa to Ontario flights
Pierre Elliott Trudeau Intl to Palm Springs flights
Pierre Elliott Trudeau Intl to San Jose flights
Region of Waterloo Intl to San Diego flights
Pierre Elliott Trudeau Intl to Reno flights
Windsor to Las Vegas flights
Pearson Intl to Santa Barbara flights
Hamilton to Santa Ana flights
Pearson Intl to Tijuana flights

Top 4 airlines flying from Ottawa to Fremont

Discover the top 4 airlines that operate flights from Ottawa to Fremont. 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 27 January 2026.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 319AverageC$ 442FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
WestJetCheapestC$ 325AverageC$ 428FlexibilityNo cancel feeOn-time60%
Search WestJet flights
United AirlinesCheapestC$ 331AverageC$ 727FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 333AverageC$ 509FlexibilityNo cancel feeOn-time67%
Search Air Canada 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 Ottawa to Fremont?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Fremont from Ottawa today with Cheapflights!

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

Millions of users choose and trust Cheapflights to book the best flight deals from Ottawa to Fremont for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Yes, we can. To see specific flights from Ottawa to Fremont 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 Ottawa to Fremont become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Fremont from Ottawa today and book when prices fit your budget.

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.