SEA - OTP

$292 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 2/5. 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
$460
Overall average: $790
Lufthansa
Mon 1/12Tue 1/27
SEA - OTP • 1 stop
Cheapest one-way
$292
Typical prices: $673-$783
Multiple Airlines
Thu 2/5
SEA - OTP • 3 stops
Top airlines
Delta
Cheapest • from $503 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 33% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 35% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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, Jan 12 - Tue, Jan 27
Lufthansa Logo
2:00 pm - 11:55 pmSEA-OTP
23h 55m1 stop
Lufthansa Logo
6:05 am - 7:16 pmOTP-SEA
23h 11m2 stops
$460Lufthansa
Find Deal
Mon, Jan 12 - Tue, Jan 27
Lufthansa Logo
2:00 pm - 11:55 pmSEA-OTP
23h 55m1 stop
Lufthansa Logo
1:05 pm - 1:20 pmOTP-SEA
34h 15m1 stop
$486Lufthansa
Find Deal
Wed, Feb 11 - Fri, Feb 20
British Airways Logo
6:50 pm - 8:00 pmSEA-OTP
15h 10m1 stop
British Airways Logo
8:00 am - 4:55 pmOTP-SEA
18h 55m1 stop
$495British Airways
Find Deal
Wed, Feb 11 - Thu, Feb 19
British Airways Logo
6:50 pm - 8:00 pmSEA-OTP
15h 10m1 stop
British Airways Logo
4:35 pm - 4:55 pmOTP-SEA
34h 20m1 stop
$496British Airways
Find Deal
Fri, Jan 9 - Fri, Jan 16
British Airways Logo
1:35 pm - 3:10 pmSEA-OTP
15h 35m1 stop
British Airways Logo
8:00 am - 4:55 pmOTP-SEA
18h 55m1 stop
$498British Airways
Find Deal
Mon, Dec 29 - Sun, Jan 18
Multiple Airlines Logo
8:10 am - 6:35 pmSEA-OTP
24h 25m2 stops
Multiple Airlines Logo
6:05 am - 7:16 pmOTP-SEA
23h 11m2 stops
$499Multiple Airlines
Find Deal
Fri, Jan 9 - Fri, Jan 16
Multiple Airlines Logo
2:00 pm - 2:10 pmSEA-OTP
14h 10m1 stop
Multiple Airlines Logo
6:55 am - 8:57 pmOTP-SEA
24h 02m2 stops
$500Multiple Airlines
Find Deal
Sun, Jan 11 - Sun, Jan 18
Multiple Airlines Logo
3:10 pm - 6:35 pmSEA-OTP
17h 25m1 stop
Multiple Airlines Logo
6:05 am - 7:16 pmOTP-SEA
23h 11m2 stops
$501Multiple Airlines
Find Deal
Mon, Feb 16 - Mon, Feb 23
Delta Logo
2:15 pm - 10:50 pmSEA-OTP
22h 35m1 stop
Delta Logo
1:55 pm - 11:40 amOTP-SEA
31h 45m1 stop
$503Delta
Find Deal
Mon, Feb 16 - Mon, Feb 23
Delta Logo
2:15 pm - 10:50 pmSEA-OTP
22h 35m1 stop
Delta Logo
1:55 pm - 11:40 amOTP-SEA
31h 45m1 stop
$504Delta
Find Deal
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’s the cheapest day of the week to fly from Seattle to Bucharest?

The average price of all round-trip flights from Seattle to Bucharest Otopeni Intl Airport clicked on KAYAK for each day over the last 12 months.

For Seattle to Bucharest, Sunday is the cheapest day to fly on average and Thursday is the most expensive. Flying from Bucharest back to Seattle, the best deals are generally found on Saturday, with Monday being the most expensive.

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 October, where tickets cost $624 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $2,249 and $1,192 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 4 weeks before departure, which saves you about 33% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$292
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly with an average 135% increase in price.
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 $292 for a one-way ticket and $460 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, Delta or KLM?

    The two airlines most popular with KAYAK users for flights from Seattle to Bucharest are Delta and KLM. With an average price for the route of $1,011 and an overall rating of 7.9, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $932 and an overall rating of 7.7.

  • 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.
7.9
DeltaOverall score based on 8005 reviews
7.3Food
8.5Crew
8.1Boarding
7.9Comfort
7.9Entertainment
Airline reviews

Staff was exceptional! Everyone was kind, professional and friendly making the trip very pleasant. Thank you!

10.0 ExcellentMary Heather, Nov 2025MKE - LGA
Read more Delta reviews

Staff was exceptional! Everyone was kind, professional and friendly making the trip very pleasant. Thank you!

No lunch on a x-country flight scheduled for 10:50 am departure, arrived 5+ hrs later. That requires a black box label before you pay for the tickets. Worst, when I checked in online, it's specifically said that lunch was served on his flight for economy Plus passengers.

We had a lot of really rough weather but that was not Delta's fault. Pilot was amazing.

First, Delta needs more flights to/from Miami. Second, a 1000pm leaving at 1230pm is unacceptable from their biggest airport world hub. Another aircraft could have been used such as the aircraft scheduled to be used in the morning for that exact same route. Yes, I did get me there but the lack of sleep the next day didn't help me enjoy my entire trip since I was busy with activities during the weekend. This can be and is expected from Spirit (going bankrupt) and Frontier (despite they're nickel and dimers). But from Delta's World Hub? That's totally unacceptable!

This flight was straightforward and without difficulty. Service was OK, but I continue to be underwhelmed by level of attention given to Sky Priority passengers.

It would’ve been nice for all that money to have a more substantial snack for free. I remember once upon a time getting a very nice turkey sandwich with Swiss cheese on whole wheat bread for no charge along with a drink. I guess those days are gone. it’s a little insulting being given a cookie or a bag of baked chips Going forward I’ll just bring my own.

Great. Seamless. Check in agent at kiosk international was amazing and extremely helpful.

Our flight from SFO to MSP was right on time on 11/15/2025. No delays. As we approached MSP at about 8 pm, we circled in the air until 8:40 pm so I don't call that efficient for MSP. I think the captain should announce the delay and why. (as if we all don't know that we are just circling around the area, slowing down, speeding up, slowing down.) Thank you. Marilyn Fischer

Service in business class was not impressive. I ordered coffee with dinner and then watched other people get 2 refills before I got my 1 cup of coffee, and only after I pressed the attendant button overhead. Furthermore, the seats in the forward cabin need maintenance on this 737-800: the upholstery is detaching from the seat frame, at least on the backs of seats 1C, 1D.

Plenty of leg room, temperature was great and staff was excellent. Would do it more often.

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.

Ad experience - been flying many years with them but they are losing out to other carriers with their service and bagage / seating policy. My 2 12-yo kids were not placed with the parent. Absurdity.

Short flight so it was okay. Nice crew, all very pleasant and professional. We were near the back in row 27 so just as we got our drinks, we started our descent so had to drink very quickly!

KLM remains a quality flag carrier airline which maintains its standards whilst all their competitors are lowering theirs.

My flight was delayed by 6 hours then I missed BOTH of my connecting flights, I then had to stay in the AIRPORT at JFK because soooooo many people also suffered from missing flights and there was no hotels available. I would like to be compensated for this experience! I had to stay in the airport for over 16 hours!

Overall it was good. Food was bad. I ordered gluten free vegetarian meal. But I got gluten free chicken for my long flight from Seattle to Istanbul. I don’t eat any kind of meat. Second meal I got eggplant with meat which I couldn’t eat. I don’t understand why we can’t get gluten free vegetarian meal for a 12 hour flight. I eat the bread and that was it.

Worse worse worse, i would not recommend this airline to anyone. Istanbul airport maybe State of the Art facility but staff is rude, only works if they get tips, and they push you to give tips even though my family had spent $50 in tips. Airline staff doesn't speak english so you really can't understand them. It was a nightmare travelling with Turkish. Never again.

As a big guy the seats are way too small for me. Would prefer more comfortable seats on these long haul flights.

My flight was canceled 1 minute before boarding. The customer service was owful, no one could tell us what was going happened. I spent 30hrs instead of 15 from Washington DC to Brussels. No apologie or help

Boeing 777 is a bad choice for a such a long flight.

The staff at IST airport could have been more helpful. Too much wasted time and the plane from IST to KHI was just horrible. The plane was not clean and smelled bad!

This is my 2nd time with the Turkish airline. Would definitely recommend. In stability we connected to Indiago would not recommend, very cramped seating. No inflight entertainment..service was inferior.

I wouldn't know what the flight was like. AI canceled my flight reservation!! There's no way to speak to an actual human to fix the issue! NEVER AGAIN! ALWAYS BOOK YOUR FLIGHT DIRECTLY WITH THE AIRLINE NEVER GO THROUGH KAYAK OR JUSTFLY.COM!!

Paying extra for premium seats was wasted. Turkish Airlines takes 2 seats for bassinet. The lady next to me had a baby with bassinet Bassinet was in front of my seat

Rude staff. I would avoid using the word racist but definitely partially or discriminatory. My 72 yrs old mother who is also disabled was traveling on this flight. She was the second passenger boarded to the plane. The First elderly couple ahead of my mother were allowed to use the airplane bathroom but my mother was denied entry stating it was for safety reasons. My mother objected the the couple in front of her were allowed but hostess still stated that due to the flight safety reasons she can’t use it. Even my mother explained that he is using blood pressure medication that’s why she have to use the restroom frequently but the crew continued arguing her. At one point the Mae attendent even suggested that if that’s the case my mother can urinate in her seat. The level of disrespect against an elderly lady is beyond my comprehension. This matter will be taken to the social media to shame the employees involved.

Trip was smooth, good drew, average meal, almost cold coffee. Excellent landing. Did not enjoy going down the stairs, walking to the gate, walking up the stairs, going a long walk to the exchange gate, and going down the stairs again to be bussed all the way where we originally landed to take our next flight! Over all an average experience. Thank you.

I booked extra leg room, due to seat neighbor i now consider extra shoulder and arm room as well. Seems like the seats shrink in width now The crew was very friendly and professional ( 100%). Food was good not great, breakfast was bad, a dry slice of bread would have been better. Facilities clean.

Luggage transfer in Chicago was not performed in time. I received my luggage at my destination two days later.

love the crews and my only problem was the delay at Frankfurt was very bad. I have travelled with Lufthansa for over 30 years now and this was cost me some planned business appointment

The flight delay made the connection a bit tight but that's outside the flight crew's control.

We just made it to our connecting flight. A long, long speed walk!

We didn't get the coffee with breakfast in the morning.. 30 mins lazer I asked flight attendant why don't we get coffee now at least.. after the breakfast..she said that captain announced possible turbulences fee minutes ago, which didn't ecplain why we didn't get it with the breakfast..breakfast was very poor btw..just little pastry which you can eat in 4 little bites. Turbulences fortunately didn't even happen.. but we didn't get that more than necessary coffee in the morning after the night flight with very poor sleep.. They just served breakfast 1 hour afzer we took off..at like 11 PM.. that doesn't make sense at all.. Also, flight attendants weren't very nice..they looked like they're not happy with their job.. :/

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.

I think they overbooked Frankfurt to New York and bumped me off. This changed my return travel I arrived home about 4 hours late. Almost 24 total travel time Totally unacceptable Would not travel with United

We were moved twice on flights to the point we weren’t even on Lufthansa anymore. We had to fly united. Lost paid extra leg room twice. To top it all off we’re forced to pay $375 and $275, respectively for you luggage that was considered sports luggage. We were told it would be Lufthansa fares l, from the united desk, AND WE DIDN'T EVEN HAVE A LUFTHANSA FLIGHT! I’ll be calling once my trip is over on October 7th to all airlines and Kayak. This was ridiculous!

Smooth trip no turbulence which is always a bonus for me lol! In cattle class so an element of being a bit squished (but not as bad as other shorter haul airlines) smaller plane than the one we flew out on and entertainment system wasn’t as modern but still definitely passed the time. Lovely crew x

I was attacked in the Miami airport and the staff did nothing. On my flight from London to Miami one of the flight attendants screamed at me and demanded I keep my seat in the upright position at all times during the fight so the man behind me was comfortable for the flight. I will never in my life use British airways again

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

I don't know about the others but the flight attendant that took care of us had the absolute wrong approach "how do we dare asking for water or anything else for that matter"

Flying on the Boeing 787 from Seattle to London was everything that I expected. Every thing was great.

Not my definition of first class. No leg room and barely any recline. The food was good. The crew was great. The comfort for the price I paid for London to Cairo was highway robbery. The Wi-Fi didn't work for me either.

Seat pitch is not enough to eat comfortably. When seat in front is reclined, your screen comes closer to your face. Ryanair seats are actually more comfortable.

The leg from Portland to Heathrow was great for a business class ticket. The BA leg from Heathrow to Lisbon was terrible. Basically coach seating with an empty seat between you and next passenger. Absolutely no leg room. Should not have been charged for business class and it was a 3 hour flight.

The flat beds. Other than that, the place was not clean.

Moved me away from my family and refused to fix it.

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

Information on your arrival and departure airports