SEA - OTP

$225 Find Cheap Flights from Seattle 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 Seattle to Bucharest departing on 4/19. 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 Seattle to Bucharest.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Bucharest.
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Everything you should know

Cheapest round-trip
$567
Overall average: $724
United Airlines
Mon 8/17Tue 8/25
SEA - OTP • 2 stops
Cheapest one-way
$225
Multiple Airlines
Sun 4/19
SEA - OTP • 2 stops
Top airlines
United Airlines
Cheapest • from $567 (round-trip)
KLM
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Seattle and Bucharest. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Copenhagen (CPH)
Cheapest • Avg $575 (round-trip)
Frankfurt am Main (FRA)
Shortest trip • 14h 00m (one-way)
Insights
Insights
Insights
Insights
When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 45% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 29% price drop
August
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 Seattle to Bucharest (SEA-OTP)

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

Mon, Aug 17 - Tue, Aug 25
United Airlines Logo
11:05 am - 1:10 am
SEA
-
OTP
28h 05m
2 stops
United Airlines Logo
6:05 am - 11:11 pm
OTP
-
SEA
27h 06m
2 stops
$567United Airlines
Wed, Aug 19 - Tue, Aug 25
United Airlines Logo
8:00 am - 12:00 pm
SEA
-
OTP
18h 00m
2 stops
United Airlines Logo
6:05 am - 11:24 pm
OTP
-
SEA
27h 19m
3 stops
$571United Airlines
Mon, Aug 17 - Fri, Aug 28
United Airlines Logo
11:05 am - 1:10 am
SEA
-
OTP
28h 05m
2 stops
United Airlines Logo
6:05 am - 11:55 am
OTP
-
SEA
15h 50m
1 stop
$575United Airlines
Wed, Aug 19 - Fri, Aug 28
United Airlines Logo
8:00 am - 12:00 pm
SEA
-
OTP
18h 00m
2 stops
United Airlines Logo
6:05 am - 11:55 am
OTP
-
SEA
15h 50m
1 stop
$579United Airlines
Sun, Jul 19 - Fri, Aug 21
United Airlines Logo
6:50 pm - 1:10 am
SEA
-
OTP
20h 20m
1 stop
United Airlines Logo
6:05 am - 9:58 am
OTP
-
SEA
37h 53m
2 stops
$580United Airlines
Wed, Jul 22 - Fri, Aug 21
United Airlines Logo
3:33 pm - 1:10 am
SEA
-
OTP
23h 37m
2 stops
United Airlines Logo
6:05 am - 9:58 am
OTP
-
SEA
37h 53m
2 stops
$584United Airlines
Mon, Aug 17 - Fri, Aug 28
United Airlines Logo
8:50 am - 1:10 am
SEA
-
OTP
30h 20m
2 stops
United Airlines Logo
6:05 am - 9:35 am
OTP
-
SEA
37h 30m
2 stops
$585United Airlines
Wed, Aug 19 - Thu, Aug 27
United Airlines Logo
8:00 am - 12:00 pm
SEA
-
OTP
18h 00m
2 stops
United Airlines Logo
6:05 am - 9:07 pm
OTP
-
SEA
25h 02m
2 stops
$587United Airlines
Mon, Aug 17 - Mon, Aug 24
United Airlines Logo
11:05 am - 1:10 am
SEA
-
OTP
28h 05m
2 stops
United Airlines Logo
1:50 pm - 6:29 pm
OTP
-
SEA
38h 39m
2 stops
$588United Airlines
Wed, Aug 19 - Mon, Aug 24
United Airlines Logo
8:00 am - 12:00 pm
SEA
-
OTP
18h 00m
2 stops
United Airlines Logo
1:50 pm - 6:59 pm
OTP
-
SEA
39h 09m
2 stops
$592United Airlines
Booking Insights

KAYAK's insights & trends for Seattle to Bucharest flights

Get data-powered insights and trends into flights from Seattle 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 Seattle 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 Seattle 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 Seattle to Bucharest Otopeni Intl Airport is January, where tickets cost $573 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $1,245 and $1,046 respectively.

How far in advance should I book a flight from Seattle 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 Seattle 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 Seattle to Bucharest Otopeni Intl Airport, you should book around 2 weeks before departure, which saves you about 45% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$225
Best time to beat the crowds but there is an average 4% increase in price.
Most popular time to fly and prices are also 11% lower on average.
Flight from Seattle to Bucharest

When to book flights from Seattle to Bucharest

Are your dates flexible? Find out the best times to travel from Seattle 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 Seattle to Bucharest flights

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

    In the last 3 days, the lowest price for a flight from Seattle to Bucharest Otopeni Intl Airport was $225 for a one-way ticket and $567 for a round-trip.

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

    Yes, you’ll need a passport to travel to Bucharest from Seattle.

  • Which aircraft models fly most regularly from Seattle to Bucharest?

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

  • Which airline alliances offer flights from Seattle to Bucharest?

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

  • Which is the best airline for flights from Seattle to Bucharest, KLM or Air France?

    The two airlines most popular with KAYAK users for flights from Seattle to Bucharest are KLM and Air France. With an average price for the route of $735 and an overall rating of 7.8, KLM is the most popular choice. Air France is also a great choice for the route, with an average price of $809 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Seattle 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 Seattle to Bucharest.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Bucharest from Seattle 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 Seattle 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 Seattle with another airline. Booking your flights between Seattle 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 Seattle 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 Seattle 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 Seattle to Bucharest

 
See real verified KAYAK customer reviews for airlines flying from Seattle 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 Seattle 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.
7.8
KLMOverall score based on 1467 reviews
7.1Entertainment
7.8Boarding
8.4Crew
7.6Comfort
7.3Food
Airline reviews

It was really nice journey i personally recommend klm flight

10.0 Excellentsmit, Mar 2026
AMD - BLR
Read more KLM reviews

It was really nice journey i personally recommend klm flight

The crew were unprofessional with a racist element. I was physically abused as well from one of the crew members

Crew is not the cheerful type. very slow meal service (this is their style as have flown this many times)

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

Delay on my previous leg, had to run to catch my flight. But that happens. Overall ok.

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.

First of all we couldn’t check in online, then we learn at the airport we were on stand by for KLM’s mistake of overbooking. The seats were not comfy at all. Our luggage got lost.

The boarding was efficient. The entertainment system was a bit unstable but Air France has a good selection of movies.

They lost my bag and I still haven’t received it yet

They lost my bag and I still have not received it

Safe and stable made me sleepy and I slept and dreamt 😂😂😂😂

Food was really mediocre for premium economy in comparison to other airlines… the crew was nowhere to be found… 14 hour flight…

I don’t like that an equipment change caused my seat to change from 23A to 44A. The boarding was also delayed. The crew were excellent, however and very attentive. The food was not bad.

Our flight crew were terrific. And they handle a difficult passenger with finesse.

Excellent, Lima to Paris. But Paris to Amsterdam, delayed, missed my flight and KLM treated its missed flights passengers very badly, terribly bad. No hotel accommodation given. Passengers were told to find their own hotel accommodation and claim at reasonable rate and left the booth and literally with armed Police Officers listening to passengers complains. For three hours, after moving by Uber from hotel to hotel and calling and booking online, no hotel was available. I had to return to the airport and seat/sleep on the benches, suffering the cold, and rats running around until my new allocated flight the next day. It was the most terrible KLM treatment even seen and being a Business Class passenger. Still mentally suffering to date as a result.

3 hour delay but out of their control. App said I get vouchers but when I applied for them, they were nowhere to be found in my account

I bought business class tickets but the seats are exactly like economy with no comfort seats nor an empty seat next to me provided. Very poor, low quality airline.

It was an amazing experience. Flight crew's service, hospitality, and the food were phenomenal. I don't think I'd want to try any other airline company after this. I would definitely recommend to friends and family. Thank you Turkish Airlines !

Business Class pods are horrible. If you're petite, you might be able to sleep on the uncomfortable seat and bed. Crew and food are fantastic.

I have travelled many times on Turkish, but they always board at least 30-40 minutes past the stated time. If informed properly, passengers can choose to spend more time in the .lounge instead of standing around by the gate waiting to board. The new lounge at DFW was a big disappointment. The aircraft itself was a shock. In the past I have flown this sector with regular business class seating configuration of 1-2-1, The 2-3-2 seating is very disappointing after paying such high prices for tickets. The DFW to Istanbul segment was slightly better, but the Istanbul to Delhi segment was no better than premium economy. I will try to travel more on airlines which give business class passengers more value for their money.

Good overall. Seat spacing a bit tight between IST and ISB.

Excellent staff despite some trying passenger situations. Very impressed with their good attitudes and kindness.

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.

Everything could have been better. What needed to be wrong with United went wrong

The staff was bit rude when I asked for an extra drink after one beer, asked for one wine glass.

Very good, i got two seats for myself, and was comfortable with the blanket i got

I hated the FRA Airport. Confusing signage, including the path to Immigration and Security It seems that the airport grew haphazardly over the years. I have been through multiple WW Hubs with much better experiences.

Economy Priority seats are extremely uncomfortable. There is no way to escape the boxed in feeling, particularely because the distance between to rows are too short, the hard edge of the front row is keeping legs confined. There is no elevated place to put your feet. I am of average, European size.

Terrible. Both flights were significantly delayed, no luggage, made me check my small bag when many, many others had much larger carry-ons, not even a bottle of water . . . I will not fly Discover Airlines again.

I was deceived on the Kayak site expecting a ticket, but instead finding a "standby" reservation. When I tried to change the ticket, I paid almost twice the price of the original ticket. Then, the airline refused to give me the reserved seat I had chosen and paid for. I think I deserve a refund for this leg of my trip because I was doubly charged and did not receive what I had paid for. I put in a complaint with Lufthansa because the ticket was sold originally sold as a flight they listed. Someone here needs to take responsibility.

Excellent service; they helped me reschedule so I can fly in an earlier flight

I had a good comfortable seat. There was nearly an hour delay. There was an accident with the champagne, but I was well compensated. These things happen sometimes.

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.

Worth every penny to upgrade to BC. Treated and felt more like First Class

I paid for a very expensive Business Class seat to and from Cairo Egypt from Charleston SC. There was partnership from states to London using American Airlines. That leg was amazing. The British Airlines leg was a joke. They used the standard no leg room 3 by 3 seats. A tray was put on the middle seat. The trip was 5 hours, from London to Cairo, thus my BC purchase. There was no screen proving tv/movie options, only a small device plug. The fold down tray and the bag of peanuts were typical of normal short run flying. The one toilet was located in the galley. We all got to know each other well. This was my first and last trip with British Airlines. I now understand why they would NEVER give me a seat chart so that I could make a selection.prior to departure. It honestly would not have made a difference, there were less than 50% of occupied seats. Apparently everyone got the memo but me. I have never felt so cheated as with that trip, got to so another going back to London, yeah. I will be sending a letter to customer service and asking for a refund. I will be photos comparing the two BC legs. OH, one more thing. The FC ticket holders got bulkhead and exit row seats. I know they had to be thrilled

Good service, food and comfort in World Traveller Plus. Entertainment was poor - no wifi on the way out and barely working on the way back. Not a great choice of entertainment on the seat back tv.

Late! Late and late! More than 1hr 30mn. This sucks when it is the last of a 4 flight journey. I missed my dinner! Which is not nice on Valentine’s Day!!! But better than the gate next to us, the poor Chinese people were rebooked to the next day flight. AA had to call security as it became very heated with the passengers! It was a mess at DFW that afternoon/evening. I wish they had some food for the people who travel as part of international journey. Indigo does it in India and it is fantastic.

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

We waited at BOS at the gate for an hour and couldn’t get a drink or anything. Once in the air the service, food and ride was excellent.

My enetertainmnet screen was broken. Lost my bags. Almost missed my flight do to connection issues with (despite a request) ZERO help from crew. Food was edible. Potatoes pretty good even

Our Jackson, Mississippi to Dallas Fort Worth flight was delayed on 1/19/26.. This was changed to Jackson to Charlotte in the last minute because of this delay. This started some kind of disconnect between American Airlines and British Airways bookings. We could not go past the passport control in London Heathrow. I had to go to the counter and waited for more than 30 minutes to get a new boarding pass. Problems did not end there. Somehow our entire return flight was canceled by someone. I had to make several phone calls over several days to fix the problem – this was not easy from India. Looks like there was some kind of disconnect between two airlines or some agent did not do it right. I’m anxious to know what went wrong.

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

Everything you need to know for your flight from Seattle to Bucharest

Information on your arrival and departure airports