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Cheap flights from Ottawa to Fremont from C$ 278

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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — SFO
4 Sep — 11 Sep1
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 5 August 2026.

Tue 15/98:15 p.m. -
1 stop23h 25m
Sun 27/96:00 a.m. -
2 stops26h 35m
Deal found 3/8C$ 482
Fri 4/94:15 p.m. -
1 stop27h 25m
Sat 12/96:00 a.m. -
1 stop20h 35m
Deal found 2/8C$ 513
Wed 2/96:00 a.m. -
1 stop9h 00m
Thu 10/96:00 a.m. -
1 stop8h 15m
Deal found 2/8C$ 516
Fri 4/98:15 p.m. -
1 stop23h 25m
Sat 19/96:00 a.m. -
1 stop20h 35m
Deal found 31/7C$ 519
Mon 5/108:15 p.m. -
1 stop18h 45m
Tue 13/106:00 a.m. -
1 stop10h 20m
Deal found 2/8C$ 523
Thu 1/1012:25 p.m. -
2 stops12h 30m
Mon 5/106:00 a.m. -
1 stop8h 15m
Deal found 2/8C$ 526
Wed 7/106:55 a.m. -
2 stops12h 45m
Tue 13/106:00 a.m. -
1 stop20h 35m
Deal found 1/8C$ 534
Thu 3/912:25 p.m. -
2 stops12h 30m
Wed 9/96:00 a.m. -
1 stop8h 15m
Deal found 2/8C$ 541

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 5 August 2026.

Round-trip from

C$ 482

One-way from

C$ 278

Popular in

July

Cheapest in

September

Average price

C$ 609
WestJet
  • WestJet
  • 15/9-27/9
  • 3 total stops
  • 50h 00m total
  • Ottawa to Fremont
Search Deals
WestJet
  • WestJet
  • 23/9
  • 1 total stop
  • 28h 40m total
  • Ottawa to Fremont
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 75 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 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 5 August 2026.
Use the filters below to find and compare flights from Ottawa to Fremont that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Fri 4/9

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

2 stops12h 30m

San Francisco

Sat 19/9

6:00 a.m.-5:35 a.m.

1 stop20h 35m

C$ 519

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Wed 2/9

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

2 stops12h 30m

San Francisco

Thu 10/9

6:00 a.m.-7:20 p.m.

1 stop10h 20m

C$ 550

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Wed 7/10

8:15 p.m.-9:55 p.m.

1 stop28h 40m

San Francisco

Tue 13/10

6:00 a.m.-7:20 p.m.

1 stop10h 20m

C$ 589

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Wed 7/10

8:15 p.m.-9:55 p.m.

1 stop28h 40m

San Francisco

Mon 12/10

6:00 a.m.-7:20 p.m.

1 stop10h 20m

C$ 589
Quickest round-trip

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Sat 17/10

7:00 a.m.-12:20 p.m.

1 stop8h 20m

San Francisco

Tue 20/10

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

1 stop8h 05m

C$ 652

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Thu 1/10

7:00 a.m.-12:20 p.m.

1 stop8h 20m

San Francisco

Mon 5/10

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

1 stop8h 05m

C$ 655

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Fri 9/10

6:15 p.m.-9:55 p.m.

2 stops54h 40m

San Francisco

Mon 12/10

6:00 a.m.-7:20 p.m.

1 stop10h 20m

C$ 656

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Wed 25/11

7:00 a.m.-12:45 p.m.

1 stop8h 45m

San Francisco

Wed 2/12

1:45 p.m.-12:43 a.m.

1 stop7h 58m

C$ 676

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Thu 26/11

7:00 a.m.-12:45 p.m.

1 stop8h 45m

San Francisco

Tue 1/12

1:45 p.m.-12:43 a.m.

1 stop7h 58m

C$ 676

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Thu 26/11

7:00 a.m.-12:45 p.m.

1 stop8h 45m

San Francisco

Wed 2/12

1:45 p.m.-12:43 a.m.

1 stop7h 58m

C$ 676

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/8

Showing 1-10 of 21 resultsSorted by cheapest first
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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 much does it cost to fly round-trip from Ottawa to Fremont?

Airfare is below average for this route at the moment.
Ottawa to Fremont flights typically cost between C$ 528 and C$ 794 in September.
The cheapest round-trip price found within the last 5 days was C$ 482 on WestJet (15 Sep-27 Sep).

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 5 August 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
8.0
Very good
450 reviews
Check prices

Boarding

8.2

Food

7.5

Entertainment

6.9

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
Porter Airlines
8.0
Very good
450 reviews
Porter Airlines
8.0
Very good
450 reviews
Check prices

Boarding

8.2

Food

7.5

Entertainment

6.9

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
United Airlines
7.4
Good
10,061 reviews
Porter Airlines
8.0
Very good
450 reviews
Check prices

Boarding

8.2

Food

7.5

Entertainment

6.9

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
WestJet
7.2
Good
3,426 reviews
Porter Airlines
8.0
Very good
450 reviews
Check prices

Boarding

8.2

Food

7.5

Entertainment

6.9

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
Air Canada
7.1
Good
11,429 reviews
Porter Airlines
8.0
Very good
450 reviews
Check prices

Boarding

8.2

Food

7.5

Entertainment

6.9

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats

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 12h 30m. 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 WestJet (C$ 220), Porter Airlines (C$ 258), and United Airlines (C$ 343).

  • 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.

See more FAQs

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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 5 August 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 355AverageC$ 538FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Porter AirlinesCheapestC$ 400AverageC$ 573FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapestC$ 403AverageC$ 781FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 425AverageC$ 692FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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

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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.

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