SEA - OTP

$298 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 11/19. 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, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Bucharest, as well as popular online travel agencies
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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

Fri, Nov 28 - Thu, Dec 11
Lufthansa Logo
3:10 pm - 6:35 pmSEA-OTP
17h 25m1 stop
Lufthansa Logo
5:50 am - 7:16 pmOTP-SEA
23h 26m2 stops
$476Lufthansa
Find Deal
Fri, Nov 28 - Thu, Dec 11
Lufthansa Logo
3:10 pm - 6:35 pmSEA-OTP
17h 25m1 stop
Lufthansa Logo
5:50 am - 12:10 pmOTP-SEA
16h 20m1 stop
$491Lufthansa
Find Deal
Fri, Nov 28 - Thu, Dec 11
Multiple Airlines Logo
10:05 am - 1:05 amSEA-OTP
29h 00m2 stops
Multiple Airlines Logo
5:50 am - 9:31 amOTP-SEA
37h 41m2 stops
$494Multiple Airlines
Find Deal
Fri, Nov 28 - Thu, Dec 11
Multiple Airlines Logo
3:10 pm - 6:35 pmSEA-OTP
17h 25m1 stop
Multiple Airlines Logo
7:10 pm - 8:54 pmOTP-SEA
35h 44m2 stops
$497Multiple Airlines
Find Deal
Sun, Nov 30 - Thu, Dec 11
Delta Logo
2:05 pm - 12:05 pmSEA-OTP
36h 00m1 stop
Delta Logo
6:00 am - 11:50 amOTP-SEA
15h 50m1 stop
$536Delta
Find Deal
Tue, Nov 25 - Sun, Dec 14
Delta Logo
2:11 pm - 10:50 pmSEA-OTP
22h 39m2 stops
Delta Logo
1:55 pm - 11:50 amOTP-SEA
31h 55m1 stop
$539Delta
Find Deal
Fri, Nov 28 - Tue, Dec 9
United Airlines Logo
9:04 am - 6:35 pmSEA-OTP
23h 31m2 stops
United Airlines Logo
5:55 am - 11:15 pmOTP-SEA
27h 20m3 stops
$547United Airlines
Find Deal
Tue, Nov 25 - Sat, Dec 13
United Airlines Logo
2:00 pm - 11:55 pmSEA-OTP
23h 55m1 stop
United Airlines Logo
5:55 am - 11:15 pmOTP-SEA
27h 20m3 stops
$556United Airlines
Find Deal
Wed, Nov 5 - Wed, Nov 19
Turkish Airlines Logo
2:40 pm - 8:30 pmSEA-OTP
19h 50m2 stops
Turkish Airlines Logo
10:10 am - 6:52 pmOTP-SEA
42h 42m2 stops
$580Turkish Airlines
Find Deal
Mon, Nov 3 - Mon, Nov 24
Turkish Airlines Logo
2:40 pm - 8:30 pmSEA-OTP
19h 50m2 stops
Turkish Airlines Logo
10:15 am - 5:05 pmOTP-SEA
16h 50m1 stop
$609Turkish Airlines
Find Deal

Everything you should know

Top airlines
Lufthansa
Cheapest • from $476 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
5 weeks
in advance
Our data shows that travelers who book at least 5 weeks in advance save around 33% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 28% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$476
Overall average: $713
Lufthansa
Fri 11/28Thu 12/11
SEA - OTP • 1 stop
Cheapest one-way
$298
Typical prices: $656-$657
Multiple Airlines
Wed 11/19
SEA - OTP • 3 stops
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Bucharest!
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 September, where tickets cost $680 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $2,203 and $1,160 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 5 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 seasonFebruary
Cheapest flight$298
Best time to beat the crowds with an average 26% drop in price.
Most popular time to fly with an average 134% 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 $298 for a one-way ticket and $476 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?

    SkyTeam, and Star Alliance are the airline alliances operating flights between Seattle and Bucharest, with SkyTeam 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 $952 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 $907 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 7981 reviews
7.3Food
7.9Comfort
8.5Crew
8.2Boarding
7.9Entertainment
Airline reviews

The aircraft interior is old and tired on this aircraft. The entertainment system never worked despite the crews attempt to reset the system.

6.0 GoodDavid, Oct 2025JFK - KEF
Read more Delta reviews

The aircraft interior is old and tired on this aircraft. The entertainment system never worked despite the crews attempt to reset the system.

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

Old plane and old configuration/seats but still comfortable for a morning flight

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

Flight was crowded and the woman sitting on my left was large & kept crouching in to my space. You need bigger seats or smaller passengers to fit into the seats you DO have! Snack were OK. Would appreciate if airlines had more savory rather than sweet snacks, thank you!

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

We were delayed, which I think had to do with air traffic control. Otherwise, everything was great.

The boarding process needs to be refined. Sometimes the gate crew calls out the zones and then flip to showing the.zones boarding on the gate monitor display. So, unless you are huddled around the gate lanes watching the monitor, you could miss your boarding zone. Suggest the zones be announced each time a new zone is allowed to board.

The boarding process needs to be refined. Sometimes the gate crew call out the boarding zone, and then flip to the monitor to show which zones are boarding. So unless everyone is gathered around to see the monitor there is usually confusion as wi which zones are boarding.

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!

Klm start boarding while somw air issue in the plan

Another delayed flight. When the delays exceed the duration of the flight, it’s a problem.

Excellent flight. Smooth, efficient boarding. Quick flight. Arrived early at STL.

After boarding the plane in Chicago, the passengers were told that there was a technical problem with the plane. Passengers remained on the plane as they tried to fix the problem. After what was probably an hour passengers were told that there was a need to change planes as the problem was not solved. Passengers disembarked and boarded another plane. After taxing to the runway and waiting for takeoff, passengers were told that owing to the thunderstorm the flight was unable to take off but would try and reroute. After some time passengers were told there wasn't enough fuel for the new route and the plane had to return to the gate for additional fuel. after another log delay the flight got underway. On the plane there was food, drinks, ice or entertainment. We were a glass of water, which appeared rationed. Flight arrived about 5 hours late. The pilot was fantastic and communicated with the passengers throughout the ordeal.

Same as last comment. Food sucks. Quality. Not surprising most people have no clue about nourishment Clearly

Not the fault of United—weather, reroute around weather, time sitting on tarmac, arrived couple hours late, too late for train into city necessitating a much pricier cab but weather…can’t be helped.

Friendly and professional flight crew. Aside from departure delay after boarding, easy flight and smooth landing.

Great smooth flight. Had a seating change, but that was an improvement. Thanks United Airways Crew.

The flight attendants were great, I joked with one I can’t remember her name, a blond, really sweet. I thought it was run well very professional. This was great i survived Spirit, I know for which I speak.

My husband and I recently had an unfortunate experience with Lufthansa. At the Philadelphia International airport, the ground staff refused to board us because we didn’t have a current visa stamped on our passports for Frankfurt. We completely understand that this was our mistake. we should have double-checked the visa requirements before our trip. However, the issue that upset us most was how the situation was handled by the staff. They told us they would mark it as “boarding denied due to visa issue”, but instead they recorded it as “no show”. Because of that incorrect entry, our return flight was automatically cancelled as well, which caused additional stress and expense. Mistakes can happen, but we expected more transparency and accuracy from a reputed airline like Lufthansa. It would have made a big difference if the staff had been more careful and considerate in documenting the situation correctly.

Flight was good but there are way to many announcements for credit cards etc.

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.

my experience was great with Turkish airlines . the problem i encountered was with kayak booking. When I booked . it showed that im allowed a bag . and when I got to the airport, i had to pay $165 for one bag.

Not up to Business Class standards. Two of the three toilets were out of order. The hostesses were aware and didn’t show any responsible act to do something. Food quality was not what we expect from Turkish hospitality. Overall we were not impressed and disappointed.

During mid flight, try to get a flight attendant to help I couldn’t find one Otherwise, everything was perfect

I was not given basinett seat.The connecting flight was missed due to airline fault i was not accomodated for hotel.Drinks were normt served frewuently.Never travelling again on tirkish airlines.I always travel wiyh family by turkish airline but no more.zero stars

The crew were very hospitable and pleasant. The food was pretty good. Unfortunately, there was a flight delay of more than 2 hours. We're not sure why but it appeared to be outside the control of Turkish Airlines.

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!

Everything went smoothly and the staff was very kind. I’m glad I purchased the extra leg room for my long flight; it was totally worth it. We were served 2 meals for a 9 hour flight which I was not expecting and they were very tasty. I appreciated them being vegetarian. Customs line in Munich was long; I had a choice to have a 1 hr 40 min layover or 2 hr 40 min layover; I took the longer layover which I was thankful for because my flight was delayed 30 minutes and there’s a good chance I would have missed my connecting flight. This was my very first international flight and I would fly Discover again without hesitation. Thank you for taking good care of me!

I liked everything BUT the temperature. It was freezing and now I am sick.

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

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