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Cheap flights from Ottawa to Fremont from C$ 259

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 6/9. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — SFO
9 Sep — 16 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 10 August 2026.

Wed 23/98:15 p.m. -
1 stop28h 40m
Wed 30/96:00 a.m. -
1 stop10h 20m
Deal found 10/8C$ 459
Sun 6/96:00 a.m. -
1 stop9h 00m
Tue 8/96:00 a.m. -
1 stop10h 20m
Deal found 6/8C$ 460
Fri 28/86:00 a.m. -
1 stop9h 00m
Sun 6/96:05 p.m. -
1 stop8h 30m
Deal found 6/8C$ 462
Wed 2/912:25 p.m. -
2 stops12h 30m
Thu 10/96:00 a.m. -
1 stop8h 15m
Deal found 6/8C$ 466
Sun 6/912:25 p.m. -
2 stops12h 30m
Sun 13/96:00 a.m. -
1 stop8h 15m
Deal found 6/8C$ 469
Thu 24/912:25 p.m. -
2 stops12h 30m
Sun 27/96:00 a.m. -
1 stop8h 15m
Deal found 7/8C$ 470
Thu 3/912:25 p.m. -
2 stops12h 30m
Wed 9/96:00 a.m. -
1 stop10h 20m
Deal found 9/8C$ 473
Fri 2/1012:25 p.m. -
2 stops12h 30m
Mon 5/106:00 a.m. -
1 stop10h 20m
Deal found 7/8C$ 474
Wed 7/107:20 a.m. -
1 stop12h 20m
Tue 13/106:00 a.m. -
1 stop10h 20m
Deal found 10/8C$ 476

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 10 August 2026.

Round-trip from

C$ 459

One-way from

C$ 259

Popular in

July

Cheapest in

September

Average price

C$ 636
WestJet
  • WestJet
  • 23/9-30/9
  • 2 total stops
  • 39h 00m total
  • Ottawa to Fremont
Search Deals
WestJet
  • WestJet
  • 6/9
  • 1 total stop
  • 9h 00m total
  • Ottawa to Fremont
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (C$ 76 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 25 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 10 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

Mon 19/10

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

2 stops12h 30m

San Francisco

Sat 24/10

1:00 p.m.-5:35 a.m.

1 stop13h 35m

C$ 503

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Wed 7/10

6:55 a.m.-4:40 p.m.

2 stops12h 45m

San Francisco

Tue 13/10

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

2 stops20h 30m

C$ 542

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Fri 2/10

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

1 stop8h 20m

San Francisco

Mon 5/10

7:35 p.m.-5:35 a.m.

3 stops31h 00m

C$ 636

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Sat 12/9

4:15 p.m.-12:00 p.m.

1 stop22h 45m

San Francisco

Sun 13/9

2:28 p.m.-5:35 a.m.

2 stops12h 07m

C$ 640

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$ 648

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Fri 16/10

6:50 a.m.-9:53 p.m.

2 stops18h 03m

San Francisco

Tue 27/10

8:00 a.m.-12:42 a.m.

2 stops13h 42m

C$ 749

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Thu 15/10

6:50 a.m.-9:53 p.m.

2 stops18h 03m

San Francisco

Thu 29/10

8:00 a.m.-12:42 a.m.

2 stops13h 42m

C$ 749

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Fri 16/10

7:20 a.m.-11:51 p.m.

2 stops19h 31m

San Francisco

Sun 25/10

1:45 p.m.-12:42 a.m.

1 stop7h 57m

C$ 752

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Wed 14/10

7:20 a.m.-4:40 p.m.

1 stop12h 20m

San Francisco

Tue 27/10

8:00 a.m.-12:42 a.m.

2 stops13h 42m

C$ 789
Quickest round-trip

OttawaSan Francisco

YOW Ottawa - SFO San Francisco

YOWSFO

Ottawa

Sun 20/9

7:00 a.m.-12:15 p.m.

1 stop8h 15m

San Francisco

Sat 26/9

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

1 stop8h 05m

C$ 799

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/8

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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$ 540 and C$ 828 in September.
The cheapest round-trip price found within the last 5 days was C$ 459 on WestJet (23 Sep-30 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 10 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
454 reviews
Check prices

Comfort

8.0

Crew

8.6

Food

7.6

Overall

8.0

Boarding

8.2

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Regan,Aug 2026

YYZ - YVR

My first flight with an all female flight crew who were the best ever.
Porter Airlines
8.0
Very good
454 reviews
Porter Airlines
8.0
Very good
454 reviews
Check prices

Comfort

8.0

Crew

8.6

Food

7.6

Overall

8.0

Boarding

8.2

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Regan,Aug 2026

YYZ - YVR

My first flight with an all female flight crew who were the best ever.
United Airlines
7.4
Good
10,101 reviews
Porter Airlines
8.0
Very good
454 reviews
Check prices

Comfort

8.0

Crew

8.6

Food

7.6

Overall

8.0

Boarding

8.2

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Regan,Aug 2026

YYZ - YVR

My first flight with an all female flight crew who were the best ever.
WestJet
7.2
Good
3,430 reviews
Porter Airlines
8.0
Very good
454 reviews
Check prices

Comfort

8.0

Crew

8.6

Food

7.6

Overall

8.0

Boarding

8.2

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Regan,Aug 2026

YYZ - YVR

My first flight with an all female flight crew who were the best ever.
Air Canada
7.1
Good
11,460 reviews
Porter Airlines
8.0
Very good
454 reviews
Check prices

Comfort

8.0

Crew

8.6

Food

7.6

Overall

8.0

Boarding

8.2

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Regan,Aug 2026

YYZ - YVR

My first flight with an all female flight crew who were the best ever.

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 and Porter Airlines fly from Ottawa to Fremont in about 8h 20m. The time it takes to get you to your destination can typically vary by up to 4h 10m. Ottawa and Fremont are separated by a distance of 3925 km. Both multi-stop and direct flights can be found to your destination and back.

  • 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$ 218), Porter Airlines (C$ 256), and United Airlines (C$ 340).

  • 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 10 August 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 352AverageC$ 539FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Porter AirlinesCheapestC$ 396AverageC$ 599FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapestC$ 400AverageC$ 805FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 422AverageC$ 687FlexibilityNo 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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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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