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Cheap flights from Ottawa to Fremont from C$ 280

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 28/8. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — SFO
18 Jul — 25 Jul1
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 18 June 2026.

Fri 21/812:25 p.m.
YOW
-
SFO
2 stops12h 30m
WestJet
Mon 24/86:05 p.m.
SFO
-
YOW
1 stop8h 30m
WestJet
Deal found 16/6C$ 501
Wed 29/76:00 a.m.
YOW
-
SFO
1 stop9h 00m
WestJet
Wed 5/86:00 a.m.
SFO
-
YOW
1 stop10h 20m
WestJet
Deal found 14/6C$ 505
Fri 21/86:00 a.m.
YOW
-
SFO
1 stop9h 00m
WestJet
Mon 31/81:00 p.m.
SFO
-
YOW
1 stop8h 40m
WestJet
Deal found 15/6C$ 507
Thu 20/86:00 a.m.
YOW
-
SFO
1 stop9h 00m
WestJet
Mon 31/86:05 p.m.
SFO
-
YOW
1 stop8h 30m
WestJet
Deal found 15/6C$ 520
Sat 29/812:25 p.m.
YOW
-
SFO
2 stops12h 30m
WestJet
Tue 8/96:00 a.m.
SFO
-
YOW
1 stop10h 20m
WestJet
Deal found 16/6C$ 521
Thu 24/912:25 p.m.
YOW
-
SFO
2 stops12h 30m
WestJet
Mon 28/96:00 a.m.
SFO
-
YOW
1 stop8h 15m
WestJet
Deal found 17/6C$ 531
Sat 5/912:25 p.m.
YOW
-
SFO
2 stops12h 30m
WestJet
Sat 12/96:00 a.m.
SFO
-
YOW
1 stop8h 15m
WestJet
Deal found 16/6C$ 532
Wed 12/86:55 a.m.
YOW
-
SFO
2 stops12h 45m
WestJet
Wed 19/86:00 a.m.
SFO
-
YOW
1 stop8h 15m
WestJet
Deal found 14/6C$ 534
Sat 22/812:25 p.m.
YOW
-
SFO
2 stops12h 30m
WestJet
Sun 30/86:05 p.m.
SFO
-
YOW
1 stop8h 30m
WestJet
Deal found 15/6C$ 539

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 18 June 2026.

Round-trip from

C$ 501

One-way from

C$ 280

Popular in

May

Cheapest in

September

Average price

C$ 631
WestJet
  • WestJet
  • 21/8-24/8
  • 3 total stops
  • 21h 00m total
  • Ottawa to Fremont
Search Deals
WestJet
  • WestJet
  • 28/8
  • 1 total stop
  • 9h 00m total
  • Ottawa to Fremont
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 51 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 18 June 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 - SFO

YOWSFO

Ottawa

Fri 21/8

6:15 p.m.-4:40 p.m.

2 stops25h 25m

San Francisco

Mon 24/8

6:00 a.m.-5:15 p.m.

1 stop8h 15m

C$ 529

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Wed 1/7

2:40 p.m.-9:51 p.m.

1 stop10h 11m

San Francisco

Sun 5/7

11:38 p.m.-10:35 a.m.

1 stop7h 57m

C$ 666

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Thu 20/8

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

1 stop9h 00m

San Francisco

Thu 3/9

10:00 p.m.-5:35 p.m.

2 stops16h 35m

C$ 709

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Thu 2/7

6:55 a.m.-9:00 p.m.

2 stops17h 05m

San Francisco

Fri 17/7

1:00 p.m.-12:40 a.m.

1 stop8h 40m

C$ 719

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Fri 18/9

6:55 a.m.-6:09 p.m.

2 stops14h 14m

San Francisco

Tue 22/9

6:00 a.m.-12:20 a.m.

2 stops15h 20m

C$ 805

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Tue 30/6

6:55 a.m.-6:13 p.m.

2 stops14h 18m

San Francisco

Wed 15/7

1:00 p.m.-12:40 a.m.

1 stop8h 40m

C$ 815
Quickest round-trip

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sun 28/6

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

1 stop8h 20m

San Francisco

Wed 15/7

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

1 stop8h 05m

C$ 844

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sat 4/7

10:44 a.m.-5:30 p.m.

2 stops9h 46m

San Francisco

Wed 15/7

5:30 p.m.-9:11 a.m.

2 stops12h 41m

C$ 873

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sat 4/7

10:44 a.m.-5:30 p.m.

2 stops9h 46m

San Francisco

Tue 14/7

6:56 p.m.-10:03 a.m.

2 stops12h 07m

C$ 875

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Wed 1/7

10:44 a.m.-6:49 p.m.

1 stop11h 05m

San Francisco

Sat 4/7

6:15 a.m.-9:35 p.m.

2 stops12h 20m

C$ 875

Flights are sorted by cheapest round-trip flights first.

Deals found on 13/6

Showing 1-10 of 22 resultsSorted by cheapest first
1
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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?

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 18 June 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
438 reviews
Check prices

Comfort

8.0

Crew

8.6

Overall

8.0

Boarding

8.2

Entertainment

6.9

Food

7.6

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
Porter Airlines
8.0
Very good
438 reviews
Porter Airlines
8.0
Very good
438 reviews
Check prices

Comfort

8.0

Crew

8.6

Overall

8.0

Boarding

8.2

Entertainment

6.9

Food

7.6

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
United Airlines
7.4
Good
9,861 reviews
Porter Airlines
8.0
Very good
438 reviews
Check prices

Comfort

8.0

Crew

8.6

Overall

8.0

Boarding

8.2

Entertainment

6.9

Food

7.6

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
WestJet
7.2
Good
3,375 reviews
Porter Airlines
8.0
Very good
438 reviews
Check prices

Comfort

8.0

Crew

8.6

Overall

8.0

Boarding

8.2

Entertainment

6.9

Food

7.6

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
Air Canada
7.1
Good
11,218 reviews
Porter Airlines
8.0
Very good
438 reviews
Check prices

Comfort

8.0

Crew

8.6

Overall

8.0

Boarding

8.2

Entertainment

6.9

Food

7.6

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.

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, Air Canada, and Delta fly from Ottawa to Fremont in about 9h. The time it takes to get you to your destination can typically vary by up to 16h 25m. 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.

  • 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 18 June 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 356AverageC$ 491FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Porter AirlinesCheapestC$ 401AverageC$ 576FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapestC$ 405AverageC$ 735FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 427AverageC$ 694FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

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

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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.

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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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