$448 Find Cheap Flights from Portland to Serbia

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to Serbia departing on 2/27. 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

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Flight Deals

Book Cheap Portland to Serbia Plane Tickets

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

Tue, Jan 13 - Tue, Jan 20
Lufthansa Logo
7:00 am - 12:45 pm
PDX
-
BEG
20h 45m2 stops
Lufthansa Logo
1:30 pm - 12:39 am
BEG
-
PDX
20h 09m2 stops
$547Lufthansa
Wed, Feb 18 - Mon, Mar 2
Delta Logo
1:25 pm - 11:55 am
PDX
-
BEG
13h 30m1 stop
Delta Logo
6:05 am - 11:25 am
BEG
-
PDX
14h 20m1 stop
$549Delta
Tue, Jan 13 - Tue, Jan 20
KLM Logo
7:00 am - 11:55 am
PDX
-
BEG
19h 55m2 stops
KLM Logo
12:35 pm - 11:25 am
BEG
-
PDX
31h 50m1 stop
$554KLM
Wed, Feb 18 - Mon, Mar 2
KLM Logo
7:00 am - 11:55 am
PDX
-
BEG
19h 55m2 stops
KLM Logo
6:05 am - 8:25 pm
BEG
-
PDX
23h 20m2 stops
$555KLM
Thu, Feb 19 - Tue, Mar 3
Multiple Airlines Logo
7:05 pm - 4:55 pm
PDX
-
BEG
36h 50m2 stops
Multiple Airlines Logo
1:50 pm - 9:15 am
BEG
-
PDX
28h 25m3 stops
$565Multiple Airlines
Thu, Feb 19 - Wed, Mar 4
SWISS Logo
10:56 am - 7:10 pm
PDX
-
BEG
23h 14m3 stops
SWISS Logo
2:35 pm - 10:45 pm
BEG
-
PDX
41h 10m2 stops
$569SWISS
Sat, Feb 21 - Fri, Mar 6
United Airlines Logo
8:30 am - 12:55 pm
PDX
-
BEG
19h 25m2 stops
United Airlines Logo
6:15 am - 7:14 pm
BEG
-
PDX
21h 59m2 stops
$584United Airlines
Wed, Feb 18 - Tue, Mar 3
SWISS Logo
10:56 am - 7:10 pm
PDX
-
BEG
23h 14m2 stops
SWISS Logo
8:05 pm - 10:45 pm
BEG
-
PDX
59h 40m3 stops
$592SWISS
Thu, Feb 19 - Wed, Mar 4
SWISS Logo
10:56 am - 8:50 am
PDX
-
BEG
36h 54m3 stops
SWISS Logo
2:35 pm - 10:45 pm
BEG
-
PDX
41h 10m3 stops
$599SWISS
Sun, Feb 22 - Sun, Mar 1
United Airlines Logo
8:30 am - 12:50 pm
PDX
-
BEG
19h 20m2 stops
United Airlines Logo
1:50 pm - 5:51 pm
BEG
-
PDX
37h 01m2 stops
$604United Airlines
Booking Insights

KAYAK's insights & trends for Portland to Serbia flights

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

Which airlines fly non-stop between Portland and Serbia?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Portland to Serbia.

There are 2 airlines that fly nonstop from Portland to Serbia. They are KLM and Delta. The cheapest airline for this route is Delta, with the best round-trip deal found costing $657 and arriving in Belgrade (BEG). On average, Delta offers the best prices for nonstop flights between Portland and Serbia.

Which airlines provide the cheapest flights from Portland to Serbia?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Portland to Serbia were found on Lufthansa ($547) and Delta ($549).

Good to know

Low seasonNovember
Cheapest flight$448
Best time to beat the crowds with an average 31% drop in price.
Most popular time to fly and prices are also 22% lower on average.
Flight from Portland to Belgrade

FAQs - booking Serbia flights

  • How does KAYAK find such low prices on flights from Portland to Serbia?

    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 Portland to Serbia.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Portland to Serbia 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 Portland to Serbia?

    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 from Portland to Serbia with an airline and back with another airline.

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

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

Reviews of the top airlines flying from Portland to Serbia

 
Need help choosing which airline to fly with from Portland to Serbia? 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 8009 reviews
7.9Entertainment
8.5Crew
7.9Comfort
7.3Food
8.1Boarding
Airline reviews

Great. I had to modify a flight. That was easy and free. Thank You

10.0 ExcellentOlumuyiwa, Dec 2025
DTW - ATL
Read more Delta reviews

Great. I had to modify a flight. That was easy and free. Thank You

I noticed that the planes seem to be outdated. There was no entertainment per se. Also, the waiting area did not have any working electrical outlets

None of the airplane features were available during the flight.

Original flight was cancelled and when i was rebooked by the airline, they couldn't seat me in the same type of seat as I had originally booked (went from window/aisle to middle/middle and one was a bulkhead seat, and other wasn't in the same class)

Lady Pilot was perfect in every way wheels up to wheels down communication, professionalism, excellent on time departure and on time arrival, excellent communication! Fantastic job with Superb attitude!!

The food is terrible. The staff is wonderful. Comfort is good.

Left on time, a bit delayed due to headwinds most of the trip.

I fly Delta all the time, have Platinum Medallion status. But this route seems to have major problems with delays and seems to never leave on time! Have only taken it twice in the last two weeks, and each time it had delays of more than 1 hour... very disappointed!!!!

Getting to the flight was arduous and lengthy. The flight itself was good but the food option wasn’t a good selection. I need to do a Kosher option on my return. Flight crew were nice

Good seats in Main cabin, excellent service and excellent landing

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.

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.

The immigration hall in Amsterdam was understaffed, so passport checking was slower than it should be for a major airport. They need to get the automatic readers up and running for non EU passport holders. Waiting in line after a long flight feels a bit abusive.

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 baggage drop-off in Stuttgart is bad: after online check-in you cannot use the automated baggage drop off as indicated on the website. You can use the terminals but have to cue to 1 of three open and slowly working counters to drop the bags. took about 45 minutes wait time.

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!

I appreciate that KLM was proactive in informing me of the 2 hour delay which enabled me to replan my travel. It was a bit stressful not knowing whether my connection from Montreal to Ottawa was happening. But the ground and air crew did a good job at comforting and assuring me.

Everything you need to know for your flight from Portland to Serbia

Information on your arrival and departure airports