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Cheap flights from Ottawa to Fremont from C$ 233

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 8/9. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — SFO
21 Aug — 28 Aug1
1 adult

Cheapflights Tip: The best prices from Ottawa to Fremont are usually found in January or May, booked 86 days in advance, depart on a Thursday or Wednesday and return on a Friday

Cheap flight deals from Ottawa to Fremont

Keep the following information in mind while searching for Ottawa to Fremont flight deals. Data was last updated 16 August 2025.

Round-trip from

C$ 404

One-way from

C$ 233

Popular in

December

Cheapest in

January

Average price

C$ 613
WestJet
  • WestJet
  • 12/9-14/9
  • 3 total stops
  • 20h 54m total
  • Ottawa to Fremont
Search Deals
WestJet
  • WestJet
  • 8/9
  • 1 total stop
  • 8h 54m total
  • Ottawa to Fremont
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (C$ 67 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 August 2025
Search Deals

Find flight deals from Ottawa to Fremont

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 16 August 2025.

Fri 12/912:20 p.m.YOW - SFO
2 stops12h 04mWestJet
Sun 14/912:50 p.m.SFO - YOW
1 stop8h 50mWestJet
Deal found 15/8C$ 404
Fri 29/87:00 a.m.YOW - SFO
1 stop8h 23mPorter Airlines
Sat 6/91:25 p.m.SFO - YOW
1 stop7h 56mPorter Airlines
Deal found 14/8C$ 411
Sun 21/96:00 a.m.YOW - SFO
1 stop8h 54mWestJet
Wed 24/97:30 a.m.SFO - YOW
2 stops13h 52mWestJet
Deal found 15/8C$ 413
Wed 24/912:20 p.m.YOW - SFO
2 stops12h 04mWestJet
Tue 30/97:30 a.m.SFO - YOW
2 stops13h 52mWestJet
Deal found 14/8C$ 414
Sat 13/97:00 a.m.YOW - SFO
1 stop8h 23mPorter Airlines
Sat 27/91:25 p.m.SFO - YOW
1 stop7h 56mPorter Airlines
Deal found 15/8C$ 422
Fri 12/93:35 p.m.YOW - SFO
1 stop8h 49mWestJet
Fri 19/92:45 p.m.SFO - YOW
2 stops21h 11mWestJet
Deal found 13/8C$ 429
Sat 13/96:00 a.m.YOW - SFO
1 stop8h 11mAir Canada
Sat 27/911:35 a.m.SFO - YOW
2 stops10h 59mAir Canada
Deal found 15/8C$ 432
Thu 25/96:00 a.m.YOW - SFO
1 stop18h 24mWestJet
Sat 4/1012:50 p.m.SFO - YOW
1 stop8h 50mWestJet
Deal found 16/8C$ 438
Sat 13/97:15 p.m.YOW - SFO
1 stop19h 39mWestJet
Sat 27/912:50 p.m.SFO - YOW
1 stop8h 50mWestJet
Deal found 14/8C$ 442
Fri 26/93:35 p.m.YOW - SFO
1 stop8h 49mWestJet
Wed 8/1012:50 p.m.SFO - YOW
1 stop8h 50mWestJet
Deal found 14/8C$ 443

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 16 August 2025.
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

Sun 12/10

6:00 a.m.-11:54 a.m.

1 stop8h 54m

San Francisco

Thu 16/10

12:50 p.m.-12:40 a.m.

1 stop8h 50m

C$ 404

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Mon 20/10

6:00 a.m.-11:54 a.m.

1 stop8h 54m

San Francisco

Thu 23/10

12:50 p.m.-12:40 a.m.

1 stop8h 50m

C$ 404

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Fri 12/9

12:20 p.m.-9:24 p.m.

2 stops12h 04m

San Francisco

Sun 14/9

12:50 p.m.-12:40 a.m.

1 stop8h 50m

C$ 404

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Wed 24/9

12:20 p.m.-9:24 p.m.

2 stops12h 04m

San Francisco

Tue 30/9

12:50 p.m.-12:40 a.m.

1 stop8h 50m

C$ 407

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sat 30/8

7:00 a.m.-12:23 p.m.

1 stop8h 23m

San Francisco

Sat 6/9

1:25 p.m.-12:21 a.m.

1 stop7h 56m

C$ 411

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Fri 29/8

7:00 a.m.-12:23 p.m.

1 stop8h 23m

San Francisco

Sat 6/9

1:25 p.m.-12:21 a.m.

1 stop7h 56m

C$ 411

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sun 21/9

6:00 a.m.-11:54 a.m.

1 stop8h 54m

San Francisco

Wed 24/9

7:30 a.m.-12:22 a.m.

2 stops13h 52m

C$ 413

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sat 13/9

7:00 a.m.-12:23 p.m.

1 stop8h 23m

San Francisco

Sat 27/9

1:25 p.m.-12:21 a.m.

1 stop7h 56m

C$ 422

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sun 14/9

6:00 a.m.-11:54 a.m.

1 stop8h 54m

San Francisco

Fri 19/9

2:45 p.m.-2:56 p.m.

2 stops21h 11m

C$ 429

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Fri 12/9

3:35 p.m.-9:24 p.m.

1 stop8h 49m

San Francisco

Fri 19/9

2:45 p.m.-2:56 p.m.

2 stops21h 11m

C$ 429

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/8

Showing 1-10 of 21 results
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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 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 8 August 2025.

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 86 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, January is the cheapest month in which you can book a flight from Ottawa to Fremont (average of C$ 276). Flying from Ottawa to Fremont in December is currently the most expensive (average of C$ 368). 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.

What is the cheapest time of day to fly from YOW to FR8?

Find hourly flight availability from Ottawa to Fremont. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 16 August 2025.

When flying from Ottawa to Fremont, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What is the cheapest day to fly from Ottawa to Fremont?

Use this chart to determine the cheapest time to fly round-trip from Ottawa to Fremont. Price data was last updated on 16 December 2024.

Travelers seeking maximum savings on their Ottawa to Fremont flight should consider departing on Sunday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 16 August 2025.
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
332 reviews
Check prices

Crew

8.7

Food

7.6

Entertainment

7.0

Comfort

8.0

Overall

8.0

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience
Porter Airlines
8.0
Very good
332 reviews
Porter Airlines
8.0
Very good
332 reviews
Check prices

Crew

8.7

Food

7.6

Entertainment

7.0

Comfort

8.0

Overall

8.0

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience
United Airlines
7.4
Good
8,916 reviews
Porter Airlines
8.0
Very good
332 reviews
Check prices

Crew

8.7

Food

7.6

Entertainment

7.0

Comfort

8.0

Overall

8.0

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience
WestJet
7.2
Good
3,016 reviews
Porter Airlines
8.0
Very good
332 reviews
Check prices

Crew

8.7

Food

7.6

Entertainment

7.0

Comfort

8.0

Overall

8.0

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience
Air Canada
7.1
Good
9,966 reviews
Porter Airlines
8.0
Very good
332 reviews
Check prices

Crew

8.7

Food

7.6

Entertainment

7.0

Comfort

8.0

Overall

8.0

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience

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.

  • 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, January is the cheapest month in which you can book a flight from Ottawa to Fremont (average of C$ 276). Flying from Ottawa to Fremont in December is currently the most expensive (average of C$ 368). 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 16 August 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 306AverageC$ 428FlexibilityNo cancel feeOn-time60%
Search WestJet flights
United AirlinesCheapestC$ 333AverageC$ 854FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 336AverageC$ 582FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Porter AirlinesCheapestC$ 341AverageC$ 449FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights

Fly with Cheapflights

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

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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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