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Cheap flights from Ottawa to Fremont from C$ 223

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 8/6. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — SFO
17 Apr — 24 Apr1
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 March 2026.

Fri 22/512:25 p.m.
YOW
-
SFO
2 stops12h 30m
WestJet
Fri 29/56:05 p.m.
SFO
-
YOW
1 stop8h 30m
WestJet
Deal found 18/3C$ 377
Fri 5/612:25 p.m.
YOW
-
SFO
2 stops12h 30m
WestJet
Sun 14/66:05 p.m.
SFO
-
YOW
1 stop8h 30m
WestJet
Deal found 17/3C$ 389
Sat 9/56:15 p.m.
YOW
-
SFO
2 stops30h 40m
WestJet
Sat 16/56:00 a.m.
SFO
-
YOW
1 stop8h 15m
WestJet
Deal found 17/3C$ 411
Mon 8/612:25 p.m.
YOW
-
SFO
2 stops12h 30m
WestJet
Mon 22/66:00 a.m.
SFO
-
YOW
2 stops27h 30m
WestJet
Deal found 16/3C$ 412
Wed 27/57:20 a.m.
YOW
-
SFO
1 stop17h 35m
WestJet
Sat 6/66:05 p.m.
SFO
-
YOW
1 stop8h 30m
WestJet
Deal found 17/3C$ 420
Fri 1/54:15 p.m.
YOW
-
SFO
1 stop22h 45m
WestJet
Fri 8/56:00 a.m.
SFO
-
YOW
1 stop8h 15m
WestJet
Deal found 17/3C$ 422
Thu 9/46:00 a.m.
YOW
-
SFO
1 stop9h 10m
WestJet
Wed 15/41:00 p.m.
SFO
-
YOW
1 stop8h 40m
WestJet
Deal found 13/3C$ 430
Sat 4/42:05 p.m.
YOW
-
SFO
1 stop10h 25m
Air Canada
Mon 13/46:00 p.m.
SFO
-
YOW
1 stop9h 45m
Air Canada
Deal found 14/3C$ 440

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 March 2026.

Round-trip from

C$ 377

One-way from

C$ 223

Popular in

December

Cheapest in

May

Average price

C$ 605
WestJet
  • WestJet
  • 22/5-29/5
  • 3 total stops
  • 21h 00m total
  • Ottawa to Fremont
Search Deals
WestJet
  • WestJet
  • 8/6
  • 2 total stops
  • 12h 30m total
  • Ottawa to Fremont
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (C$ 107 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 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

Mon 8/6

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

2 stops12h 30m

San Francisco

Mon 22/6

6:00 a.m.-12:30 p.m.

2 stops27h 30m

C$ 412

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Wed 27/5

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

2 stops30h 40m

San Francisco

Sat 6/6

6:05 p.m.-5:35 a.m.

1 stop8h 30m

C$ 457

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Tue 19/5

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

1 stop22h 45m

San Francisco

Mon 25/5

6:05 p.m.-5:35 a.m.

1 stop8h 30m

C$ 471

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Thu 9/4

6:00 a.m.-12:10 p.m.

1 stop9h 10m

San Francisco

Wed 15/4

1:00 p.m.-12:39 a.m.

2 stops32h 39m

C$ 472

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Wed 22/4

7:45 a.m.-3:32 p.m.

1 stop10h 47m

San Francisco

Wed 29/4

2:30 p.m.-1:36 a.m.

1 stop8h 06m

C$ 479

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Wed 3/6

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

2 stops12h 45m

San Francisco

Sat 6/6

6:05 p.m.-5:35 a.m.

1 stop8h 30m

C$ 538

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Thu 16/4

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

1 stop9h 00m

San Francisco

Thu 23/4

1:45 p.m.-12:41 a.m.

1 stop7h 56m

C$ 545

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Wed 29/4

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

1 stop9h 00m

San Francisco

Thu 30/4

1:45 p.m.-12:41 a.m.

1 stop7h 56m

C$ 582

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Wed 15/4

7:25 p.m.-12:10 p.m.

2 stops19h 45m

San Francisco

Tue 21/4

1:45 p.m.-12:41 a.m.

1 stop7h 56m

C$ 608
Quickest round-trip

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Wed 1/7

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

1 stop8h 20m

San Francisco

Sun 5/7

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

1 stop8h 05m

C$ 637

Flights are sorted by cheapest round-trip flights first.

Deals found on 15/3

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 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 13 March 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, February is the cheapest month in which you can book a flight from Ottawa to Fremont (average of C$ 333). 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 18 March 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
424 reviews
Check prices

Overall

8.0

Boarding

8.2

Crew

8.6

Comfort

8.0

Food

7.6

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
Porter Airlines
8.0
Very good
424 reviews
Porter Airlines
8.0
Very good
424 reviews
Check prices

Overall

8.0

Boarding

8.2

Crew

8.6

Comfort

8.0

Food

7.6

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
United Airlines
7.4
Good
9,435 reviews
Porter Airlines
8.0
Very good
424 reviews
Check prices

Overall

8.0

Boarding

8.2

Crew

8.6

Comfort

8.0

Food

7.6

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
WestJet
7.2
Good
3,297 reviews
Porter Airlines
8.0
Very good
424 reviews
Check prices

Overall

8.0

Boarding

8.2

Crew

8.6

Comfort

8.0

Food

7.6

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
Air Canada
7.1
Good
10,813 reviews
Porter Airlines
8.0
Very good
424 reviews
Check prices

Overall

8.0

Boarding

8.2

Crew

8.6

Comfort

8.0

Food

7.6

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.

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$ 204), Porter Airlines (C$ 224), and Air Canada (C$ 226).

  • 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, February is the cheapest month in which you can book a flight from Ottawa to Fremont (average of C$ 333). 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

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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 March 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 339AverageC$ 437FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Porter AirlinesCheapestC$ 347AverageC$ 514FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapestC$ 357AverageC$ 598FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 414AverageC$ 718FlexibilityNo 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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