$108 Find Cheap Flights from Boston to Fremont

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Fremont departing on 8/23. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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Cheap Flights from Boston to Fremont (BOS-SFO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to Fremont that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boston to Fremont

Sat, Sep 20 - Sat, Sep 27
Delta Logo
5:45 pm - 9:43 pmBOS-SFO
6h 58mnonstop
Delta Logo
7:00 am - 3:50 pmSFO-BOS
5h 50mnonstop
$237Delta
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Tue, Aug 26 - Wed, Sep 3
Alaska Airlines Logo
8:23 pm - 11:52 pmBOS-SFO
6h 29mnonstop
Alaska Airlines Logo
10:08 am - 12:23 amSFO-BOS
11h 15m1 stop
$247Alaska Airlines
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Fri, Sep 19 - Sat, Sep 27
JetBlue Logo
5:15 pm - 8:53 pmBOS-SFO
6h 38mnonstop
JetBlue Logo
8:25 pm - 5:04 amSFO-BOS
5h 39mnonstop
$248JetBlue
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Thu, Jul 10 - Wed, Jul 16
Hawaiian Airlines Logo
8:19 pm - 11:59 pmBOS-SFO
6h 40mnonstop
Hawaiian Airlines Logo
9:28 pm - 6:10 amSFO-BOS
5h 42mnonstop
$251Hawaiian Airlines
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Thu, Jul 10 - Wed, Jul 16
Hawaiian Airlines Logo
5:45 pm - 11:50 pmBOS-SFO
9h 05m1 stop
Hawaiian Airlines Logo
9:28 pm - 6:10 amSFO-BOS
5h 42mnonstop
$255Hawaiian Airlines
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Thu, Jul 10 - Mon, Jul 14
United Airlines Logo
6:00 am - 9:28 amBOS-SFO
6h 28mnonstop
United Airlines Logo
3:15 pm - 11:59 pmSFO-BOS
5h 44mnonstop
$259United Airlines
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Thu, Jul 10 - Wed, Jul 16
JetBlue Logo
9:19 pm - 12:59 amBOS-SFO
6h 40mnonstop
JetBlue Logo
6:05 am - 2:50 pmSFO-BOS
5h 45mnonstop
$260JetBlue
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Thu, Jul 10 - Mon, Jul 14
United Airlines Logo
6:00 am - 9:28 amBOS-SFO
6h 28mnonstop
United Airlines Logo
7:03 pm - 6:01 amSFO-BOS
7h 58m1 stop
$269United Airlines
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Thu, Jul 10 - Wed, Jul 16
American Airlines Logo
9:49 am - 3:56 pmBOS-SFO
9h 07m1 stop
American Airlines Logo
6:45 pm - 5:41 amSFO-BOS
7h 56m1 stop
$281American Airlines
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Thu, Nov 13 - Sun, Nov 16
American Airlines Logo
1:11 pm - 8:42 pmBOS-SFO
10h 31m1 stop
American Airlines Logo
10:46 pm - 11:04 amSFO-BOS
9h 18m1 stop
$308American Airlines
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Good to know

Low seasonJanuary
High seasonDecember
Cheapest flight$108
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly with an average 15% increase in price.
Flight from Boston to San Francisco

When to book flights from Boston to Fremont

Are your dates flexible? Find out the best times to travel from Boston to Fremont based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Flights from Boston to Fremont: the best tips from KAYAK users' own experiences

Insights shared by verified travelers who flew the route from Boston to Fremont 
GeraldFlew with DeltaBOS-SFOMar 2025
Book a flight early in the morning. The plane & crew will have arrived the previous night
PaulaFlew with Alaska AirlinesBOS-SFOJul 2024
Get your boarding pass online and save it to your wallet App on the iPhone. Makes it so easy

FAQs for booking flights from Boston to Fremont

  • Which airports will I be using when flying from Boston to Fremont?

    When flying out of Boston you’ll be using Boston Logan Intl. Fremont does not have its own airport so you’ll be flying into nearby San Francisco airport, which is 21.9 mi away.

  • How long does a flight from Boston to Fremont take?

    Direct flights cover the 2,696 miles separating Boston and Fremont in about 6h 28m.

  • How many flights are there between Boston and Fremont?

    61 direct flights run between Boston and Fremont on a daily basis. On average, there are about 432 departures each week.

  • What’s the cheapest day of the week to fly between Boston and Fremont?

    Consider leaving on a Saturday and avoid Fridays if you are looking for the best rates. For your return to Boston, you’ll find the best rates on Tuesdays and the most expensive ones on Thursdays.

  • How does KAYAK find such low prices on flights from Boston to Fremont?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boston to Fremont.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to Fremont?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Fremont from Boston is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boston to Fremont?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Fremont with an airline and back to Boston with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to Fremont?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Fremont from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which airlines provide the cheapest flights from Boston to Fremont?

    In the last 72 hours, the cheapest one-way ticket between Boston and Fremont found on KAYAK was with Alaska Airlines for $108. Delta offered a round-trip connection from $237 and Alaska Airlines from $247.

Top tips for finding cheap flights from Boston to Fremont

  • There is no airport in Fremont. Instead, you’ll be flying into San Francisco Airport when flying between Boston and Fremont.
  • The cheapest flight from Boston to Fremont was found 56 days before departure, on average.
  • Book at least 2 weeks before departure in order to get a below-average price.
  • High season is considered to be November, December and January. The cheapest month to fly is September.

Reviews of the top 5 airlines serving Boston to Fremont

 
Need help choosing which airline to fly with from Boston to Fremont? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 10000 reviews
7.1Food
8.1Boarding
7.8Comfort
8.5Crew
7.1Entertainment
Airline reviews

Passengers were not informed timely of delays. The staff appeared like they didn't really care about the passengers.

6.0 GoodDarrilynn, Jun 2025SEA - SFO
Read more Alaska Airlines reviews

Passengers were not informed timely of delays. The staff appeared like they didn't really care about the passengers.

Both flights were delayed going to our destination and leaving, and communication about the delays was not great by the airlines, now the crews were phenomenal and great to be around!!

Delayed. It's not our first flight with them either, it's actually our 3rd and all 3 were delayed by hours each time. It was a myriad of delays. On one flight we boarded after being delayed for a little over an hr, only to be told we were going to sit in the plane for another hour before departing. Once landed, we waited another 40ish min to get to our gate. On another flight, flight was delayed just under 3 hrs but atleast we got to wait it out at the airport terminal. Its just a bad experience overall flying with Alaska Airlines.

Flight was delayed for weather, then delayed for mechanical, then just cancelled. Once mechanical problems started I wish you had just started offering rebooking options (at the same airport). I felt my trip was not a priority for you. I called you, I asked for a better option (than changing airports), then I had to literally run around the airport making it happen. Do better.

I would've liked to have the seat tablets like before to view movies, with long travels not everyone carries tablets to view movies. And phones are not worth it because screens to small.

Horrible! No blanket or pillow available! We had bulkhead seats but the seats were worn out and no cushion old. No meal or even a sandwich for our 5 hour flight just a little bag of pretzels. Crabby attendant female with long brown hair. We will not book Alaska Airlines again

On time, smooth take off and landing, efficient boarding. Gate staff excellent, stewardess grumpy, but civil enough.

No WiFi available. It was too late to order food also. Guy next to me was huge (not fat) so had his shoulder & thigh next to me the whole way. Plane was delayed leaving PDX due to 8 other planes waiting. Not my best Alaska airlines flight.

I do wish the the actual airplane I flew on was bigger. But, I made it work.

It is very bad they do not give you money back

I want to single out flight attendant Mitch who was in the Premium Economy section. When my wife’s hearing aide dropped through the cushion under the seat he was able to locate it and return it to her. Food was a different matter. Dinner was fine. Breakfast was another matter. They had a yogurt dish that the ran out of and the alternative was not very good according to those we talked to.

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

Great flight! Only complaint I had was that I didn’t get breakfast that morning because I don’t eat eggs for breakfast.. I ate an energy bar I bought in the airport which I had never done before. Otherwise, another great Delta flight!

The entertainment and wifi mostly didn't work on this flight.

Terrible entertainment system - kept freezing and audio kept cutting out. Snacks were mediocre at best for a 5 hour flight.

I am still upset that my bag was lost on a recent trip to Rome ; we were inconvenienced and out €150 Euros ; delta has refused to reimburse us

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Seats are much much more comfortable than United, which is what I usually fly

Logan airport construction meant that boarding was chaotic crowded and delayed

If I pay extra for "comfort+" I expect leg room where I can stretch my legs. I was seated with an attendant's seat blocking my feet. Knee space was fine but my feet had less room than the non-"comfort+" seats. Also, don't go cheap on food when you have flights of 3+ hours. It's insulting.

Boarding was mayhem. Late boarding by 15 minutes because of lack of staff (missing 1 flight attendant. We had to wait for an arrival of another plane before we could board). Flight was a little rough, but cannot blame on airlines.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

Excellent service despite turbulence during the flight. Flight attendants were remarkable!

United out of SFO is having issues with catering so none of our meals were loaded on the plane and no offer of compensation for our tickets purchased was offered.

A bit rush for transit. Food and entertainment are not available

The gate was too far away for the connecting flight

Generally good. The aisles have gotten narrower which can slow down boarding. Flight crew was great! Healthier complimentary snacks would be appreciated. Due to earthquake in San Francisco we had to circle in air space for a bit but then had a smooth landing. I laud the flight crew for their patience ;)

The agents was very rude and they charged me $50 for a carry-on bag saying that it was too big and then I saw someone going on a plane with the same size bag as me

For the most part united was a good experience, how ever when they came by with the snacks and water, they completely passed by my wife and I. As we were in separate rows. On a 5 hr flight we were not offered water

Fantastic crew. Flight was delayed at last minute but we were given updates every 20 minutes and the crew was so friendly and considerate. I miss the touch screens on the back of the seats, wish they would bring that back though.

The check in and boarding process was a bit of a cluster. Two people at the counter to check in, three random lines that nobody knew which was for what, and people kept getting shuffled from one line to another for no apparent reason because then they’d get shuffled back and end up getting out further back in the line than they were originally. I only had to hand my already checked bag over and it took 45 minutes. I was never assigned a seat so when I tried to board I was pulled out of line again while someone had to try to manually assign me a seat. During the flight I got up to go to the bathroom, and there was an attendant in the aisle offering pillows etc and it was a 30 min wait unbuckled standing by the bathrooms because she said I couldn’t go past her. First and last time flying jet blue to be honest.

Communication since no reason or explanation was given for 3 hrs delay

Flight was delayed several 3 hours - no reason was given and no communication what so ever.

No overhead baggage room even though I was seated in row 2. Consequently had to check in my carry on bag. Baggage carousel was jammed. Took 45 min to get my bag.

Excellent from start to finish. All staff members were amazing!

Excellent. Although they used to greet me as a mosaic member and provide a free drink, early boarding helps me to keep coming back to JetBlue.

Cancelled flight with no specific instructions to get a boarding pass for another flight. The whole flight of people were in line for an hour because there was only 1 person to help at the desk. This was unusual for JetBlue.

It was too hot in the cabin. The AC did not help.

Except for the 28 minute delay leaving and the earlier reschedule to a later takeoff time the flight was good.

Loved the leg room and tvs screens on the seats and free WiFi. Wish the price was lower and could save by rebooking

Loved the staff, boarding and drink options! Wish the comfort of the seat could have been better nevertheless

Honestly, I haven’t flown American in years, probably due to the pandemic and my being unable to travel for certain periods in the last two years, but it was a good experience to dig out or obtain a new American Airlines account after many years of traveling for business with American in the past.

Long 5 hour and 45 min flight and only one drink service and cookie snack

Whenever a passenger purchase a ticket his advantage number should automatically to his information. It's not everyone remember the number. You request for your number and American airline agent say they will email it....and they never email anything and you loose your mileage just because you don't remember your number. It should automatically go your information and associate with your email account at all times

I miss the screens they used to have for the long flights. I use a Kendal and it doesn’t work well with there WiFi. I tried my cell and the wifi was not good for it either this is the free wifi.

It was nobody’s fault - but the plane came 4-hrs late and we were updated randomly in 20-30 mins increments which left us hostage to sit and wait expectantly. It was very long and got very late. Our plane didn’t land until nearly 1 am! Also the toilet wasn’t working. The hosts were nice enough but were clearly “about to pass out” as one told me. Lastly, there was no snack or even time for it. Just a bad experience overall.

One bottle of water and a package of cookies for comfort plus. We had to literally beg a flight attendant for an extra bottle of water later in the flight due to feeling dehydrated.

Everything was fine. Flight boarded and departed on time. Seating was spacious enough for my carryon to fit under the seat in front of me. No complaints at all. Flight even arrived early.

Flight boarded from Gate 39 at OGG, the farthest gate in the terminal. There were no Hawaiian themed amenities for the flight. The first class service was mediocre at best; I received not special welcome or recognition as an executive platinum member of American Advantage program. The flight attendants were more concerned with their cell phones than saying "thank you" to the passengers as we disembarked. Fortunately, the flight arrived at LAX a few minutes early.

Bigger seats. Board back to front! Disembark front to back!

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