SFO - OTP

$341 Find Cheap Flights from San Francisco to Bucharest

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to Bucharest departing on 6/1. 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.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Bucharest Otopeni Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Bucharest.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Bucharest.
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$534
Overall average: $694
United Airlines
Mon 8/10Wed 8/19
SFO - OTP • 1 stop
Cheapest one-way
$341
Typical prices: $876-$947
British Airways
Mon 6/1
SFO - OTP • 2 stops
Top airlines
United Airlines
Cheapest • from $534 (round-trip)
KLM
Best reviews • 7.7 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 23% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
November
Cheapest • 29% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Bucharest!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from San Francisco to Bucharest (SFO-OTP)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Francisco to Bucharest 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 San Francisco to Bucharest

Mon, Aug 10 - Wed, Aug 19
United Airlines Logo
9:05 pm - 1:10 am
SFO
-
OTP
18h 05m
1 stop
United Airlines Logo
6:05 am - 3:15 pm
OTP
-
SFO
19h 10m
1 stop
$534United Airlines
Mon, Aug 10 - Wed, Aug 19
United Airlines Logo
9:05 pm - 1:10 am
SFO
-
OTP
18h 05m
1 stop
United Airlines Logo
6:05 am - 9:45 pm
OTP
-
SFO
49h 40m
2 stops
$537United Airlines
Wed, May 13 - Fri, May 22
Lufthansa Logo
9:05 pm - 1:10 am
SFO
-
OTP
18h 05m
1 stop
Lufthansa Logo
6:15 am - 7:00 pm
OTP
-
SFO
22h 45m
1 stop
$546Lufthansa
Tue, May 19 - Tue, Jun 2
Multiple Airlines Logo
9:05 pm - 1:10 am
SFO
-
OTP
18h 05m
1 stop
Multiple Airlines Logo
6:05 am - 9:02 pm
OTP
-
SFO
24h 57m
2 stops
$550Multiple Airlines
Wed, Apr 8 - Wed, Apr 22
Lufthansa Logo
9:05 pm - 1:10 am
SFO
-
OTP
18h 05m
1 stop
Lufthansa Logo
6:05 am - 12:40 pm
OTP
-
SFO
16h 35m
1 stop
$551Lufthansa
Sun, Aug 9 - Thu, Aug 27
United Airlines Logo
9:05 pm - 1:10 am
SFO
-
OTP
18h 05m
1 stop
United Airlines Logo
6:05 am - 3:15 pm
OTP
-
SFO
19h 10m
1 stop
$552United Airlines
Sun, Mar 15 - Tue, Mar 24
Lufthansa Logo
10:40 pm - 1:05 am
SFO
-
OTP
17h 25m
1 stop
Lufthansa Logo
5:55 am - 1:40 pm
OTP
-
SFO
16h 45m
1 stop
$553Lufthansa
Wed, Mar 18 - Wed, Apr 1
Lufthansa Logo
10:40 pm - 1:05 am
SFO
-
OTP
17h 25m
1 stop
Lufthansa Logo
12:45 pm - 7:00 pm
OTP
-
SFO
16h 15m
1 stop
$554Lufthansa
Sun, Aug 9 - Mon, Aug 31
SWISS Logo
7:35 pm - 3:20 pm
SFO
-
OTP
33h 45m
1 stop
SWISS Logo
4:10 pm - 4:15 pm
OTP
-
SFO
34h 05m
1 stop
$555SWISS
Tue, Aug 11 - Fri, Aug 28
United Airlines Logo
6:30 am - 6:35 pm
SFO
-
OTP
26h 05m
2 stops
United Airlines Logo
6:05 am - 3:15 pm
OTP
-
SFO
19h 10m
1 stop
$556United Airlines
Booking Insights

KAYAK's insights & trends for San Francisco to Bucharest flights

Get data-powered insights and trends into flights from San Francisco to Bucharest to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from San Francisco to Bucharest Otopeni Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Francisco to Bucharest Otopeni Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from San Francisco to Bucharest Otopeni Intl Airport is November, where tickets cost $590 (return) on average. On the other hand, the most expensive months are June and April, where the average cost of round-trip tickets is $1,330 and $1,071 respectively.

How far in advance should I book a flight from San Francisco to Bucharest Otopeni Intl Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Francisco to Bucharest Otopeni Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from San Francisco to Bucharest Otopeni Intl Airport, you should book around 2 weeks before departure, which saves you about 23% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$341
Best time to beat the crowds but there is an average 5% increase in price.
Most popular time to fly with an average 3% increase in price.
Flight from San Francisco to Bucharest

When to book flights from San Francisco to Bucharest

Are your dates flexible? Find out the best times to travel from San Francisco to Bucharest based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking San Francisco to Bucharest flights

  • What is the cheapest flight from San Francisco to Bucharest Otopeni Intl Airport?

    In the last 3 days, the lowest price for a flight from San Francisco to Bucharest Otopeni Intl Airport was $341 for a one-way ticket and $534 for a round-trip.

  • Do I need a passport to fly between San Francisco and Bucharest?

    Yes

  • Which airports will I be using when flying from San Francisco to Bucharest?

    On your way to Bucharest, you’ll fly out from San Francisco. You’ll be landing at Bucharest Otopeni Intl.

  • Which aircraft models fly most regularly from San Francisco to Bucharest?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from San Francisco to Bucharest?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between San Francisco and Bucharest, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from San Francisco to Bucharest, KLM or SWISS?

    The two airlines most popular with KAYAK users for flights from San Francisco to Bucharest are KLM and SWISS. With an average price for the route of $914 and an overall rating of 7.7, KLM is the most popular choice. SWISS is also a great choice for the route, with an average price of $860 and an overall rating of 7.6.

  • How does KAYAK find such low prices on flights from San Francisco to Bucharest?

    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 San Francisco to Bucharest.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Bucharest from San Francisco 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 San Francisco to Bucharest?

    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 Bucharest with an airline and back to San Francisco with another airline. Booking your flights between San Francisco and OTP can sometimes prove cheaper using this method.

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

    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 Bucharest from San Francisco up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from San Francisco to Bucharest

 
See real verified KAYAK customer reviews for airlines flying from San Francisco to Bucharest. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Francisco to Bucharest? 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.
7.7
KLMOverall score based on 1455 reviews
7.6Comfort
7.1Entertainment
7.8Boarding
8.4Crew
7.3Food
Airline reviews

Empty seats next to me - wish it had been for a longer flight!!

8.0 ExcellentAnonymous, Feb 2026
AMS - NCL
Read more KLM reviews

Empty seats next to me - wish it had been for a longer flight!!

I’m grateful for the KLM Air France shuttle bus service to Ottawa. However due to construction and other issues related to the chaotic Uber pickup system at YUL, it’s a challenge to find the Kelios bus service to Ottawa. The signs are not clear or even available. No staff to guide passengers. It’s a stressful experience.

Flight was on time, staff are friendly and helpful onboard.

Terrible last row seats many seats available but no offer to move to better seat

Delay and had to run between flight to get my connection due to this delay but besides that the overall experience was ok. I arrived with just an hour of delay.

At the airport, terrible, I do not want to even remember it. It was too humiliating for a business class passenger.

Flight was ok but lack of communication cost me to literally beg to be put on another flight as connecting flight had departed

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

Couldn’t get boarding pass in SLC even with help from a redcoat, so had to find a desk in AMS to get boarding pass. Technical problems so not sure why. Very inconvenient. The KLM app is not as user friendly as most apps. Also had to wait almost an hour on the tarmac for a fuel truck, which caused us to miss a connecting bus in LUX.

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

Entertainment kept turning itself off. Gave up on watching a movie.

Very disappointing given gate agent behavior. Filed a formal complaint with United.

Terrible. No customer service, no food, no drinks on a 6 hour premier economy booking.

The flight crew where really good. Better then the crew from BNE to SFO

Food should be changed in menu Many muslims travels in this airlime they need to add one Halal meal

left on time, reasonable boarding process arrived early luggage came out quickly

Some flight attendants were great others were cranky. Seats were very tight and sitting on an aisle was very hard as the carts and people walking constantly bumped shoulder and arm.

Pushed back only to get deplaned due to a tire damaged by ground crew. They did at least go pretty fast. The bathrooms should be banned under the Geneva convention. No room to even sit straight on the toilet. The under-seat entertainment units block what little leg room there is.

United airlines has the best customer experience from booking to arrival. I always fly United airlines. The mileage program is excellent

from SFO-> FRA flight, AVML meal was significantly less compared to regular meal, especially no Desert, no Bread, no sides.

Crew were unfriendly, touch screen for movies didn't work very well, seats were tight and uncomfortable

After arriving in Istanbul, the transit information on the electronic board showed a tight departure time, and the gate changed in the middle, making it difficult to make it on time.

Typically good service onboard but baggage delay in airport was significant

My, Syed Zawar Hussein Shirazi frequently flyer membership number was not included on my boarding pass from O’Hare to Istanbul despite my reminder to the attendant at check in. Further she forgot to give me my boarding pass form Istanbul to Lahore and she needs to improve her customer service, please 🙏

Everything about that day was great I was happy with how things went as a first time traveling with the airline thank you for all that you’ve doing by taking us there to our various destinations thanks.

They oversold the tickets by one which was my ticket so I didn’t have a ticket till last second

Not good. I was supposed to be in Mint but got in economy class

Service was slow and checked bag was off last evening when flying business

Turkish Airline canceled our tickets in the very last minute, with our luggage and everything else, all prepared and good to go. It’s clear that they sold the tickets for better money to someone else. Bad, Bad, Bad business!!!

Awful seating. Bad food. Staff only have one bottle of water and no cans.

Service and food were excellent. Incredibly friendly and competent staff. Flight was delayed over and hour and I had to run between terminals to get my connecting flight.

Late flight Delays Poor service Poor staff Worst airline ever

Lufthansa still has a good level of quality compared to US airlines, especially with respect to (1) food quality - actually tasty, (2) good French red wine - free, (3) good movie selection. Also my ticket price includes 1 free check-in luggage, while some other budget airlines sneak in an extra $150 for a checkin.

The food could be better, more snacks. And have some plugs to chargue the phone.

Everything was really great just The aircraft was too old and sounded it will break during takeoff

Extremely pleased with the crew. Best flight attendants ever! Very friendly, genuinely caring and attentive.

Best flight attendants ever! Very customer and service oriented, courteous, professional and helpful.

Cheapest airlines I have ever been on. I got downgraded and never got on united. I got rerouted through Vancouver onto jetwesf

Very small and uncomfortable seats, Hard to hear entertainment system sound. Horrible food. Staff doesn't care much about the passengers. 2nd time they didn't give me my vegetarian meal. They asked me regular food with meat. The airline and staff was from United airlines.

Checkin took along timen only.few angents available at.checkin desk. Customer support over phone no existence

They had us seating down for one hour just waiting on the plane

Flying with BA is always a good experience—even in economy class. It is better if in business and first class. Timely, breeze through security and timely connections

The issue was not with BA it was with the link yoiu sent fopr booking the flight

Loved the boarding option from Business class lounge, experience on flight was excellent, plenty of good food choices

Awful it always is unfortunately is the only way to fly direct to london

Check in was was and the agent was very friendly and helpful The lounge was nice...boarding was straight from the lounge Everything worked at our seats, and video entertainment was good ..food was mediocre

Airlines have to stop assuming passengers bring entertainment. Provide it like you used to in business class and above!! N

Need to offer Better food from LAX to London Service from London to Delhi very delayed after take off.

Great crew and food and beverage. Seating tight but not the airline's fault. Will definitely fly BA in future!

Much much better than my previous times on British Airways the food was spot-on and the service was really genuine and attentive

Everything you need to know for your flight from San Francisco to Bucharest

Information on your arrival and departure airports