$512 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 7/10. 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, Jul 28 - Tue, Sep 1
Delta Logo
3:30 pm - 10:55 pm
PDX
-
BEG
22h 25m
2 stops
Delta Logo
6:15 am - 11:10 am
BEG
-
PDX
13h 55m
1 stop
$889Delta
Tue, Jul 28 - Wed, Sep 2
Delta Logo
3:30 pm - 10:55 pm
PDX
-
BEG
22h 25m
2 stops
Delta Logo
6:15 am - 3:06 pm
BEG
-
PDX
17h 51m
2 stops
$894Delta
Mon, Jul 20 - Wed, Aug 19
Delta Logo
1:05 pm - 10:55 pm
PDX
-
BEG
24h 50m
1 stop
Delta Logo
6:15 am - 8:49 pm
BEG
-
PDX
23h 34m
2 stops
$899Delta
Sat, Jul 18 - Tue, Aug 18
Delta Logo
10:55 pm - 11:55 am
PDX
-
BEG
28h 00m
2 stops
Delta Logo
12:35 pm - 9:35 pm
BEG
-
PDX
42h 00m
2 stops
$903Delta
Sun, Aug 2 - Fri, Aug 28
United Airlines Logo
1:17 pm - 11:55 pm
PDX
-
BEG
25h 38m
2 stops
United Airlines Logo
5:50 am - 8:50 pm
BEG
-
PDX
24h 00m
2 stops
$913United Airlines
Wed, Jul 29 - Fri, Aug 28
United Airlines Logo
11:16 am - 11:35 pm
PDX
-
BEG
27h 19m
2 stops
United Airlines Logo
5:50 am - 11:00 pm
BEG
-
PDX
26h 10m
2 stops
$922United Airlines
Fri, Jul 31 - Fri, Aug 28
United Airlines Logo
11:40 pm - 11:35 pm
PDX
-
BEG
38h 55m
2 stops
United Airlines Logo
5:50 am - 8:50 pm
BEG
-
PDX
24h 00m
2 stops
$934United Airlines
Sat, Jul 11 - Wed, Aug 12
Delta Logo
12:33 am - 11:55 am
PDX
-
BEG
26h 22m
2 stops
Delta Logo
12:35 pm - 11:10 am
BEG
-
PDX
31h 35m
1 stop
$938Delta
Thu, Jul 30 - Wed, Sep 2
Delta Logo
7:05 am - 11:55 am
PDX
-
BEG
19h 50m
2 stops
Delta Logo
6:15 am - 11:10 am
BEG
-
PDX
13h 55m
1 stop
$939Delta
Thu, Jul 30 - Fri, Aug 28
Delta Logo
11:17 am - 11:55 am
PDX
-
BEG
15h 38m
2 stops
Delta Logo
6:15 am - 3:06 pm
BEG
-
PDX
17h 51m
2 stops
$944Delta
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.

What is the cheapest month to fly from Portland to Serbia?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Portland to Serbia, 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 Portland to Serbia is February, when tickets cost $534 (return) on average. On the other hand, the most expensive months are June and March, when the average cost of round-trip tickets is $1,399 and $1,251 respectively.

Good to know

Low seasonMarch
Cheapest flight$512
Best time to beat the crowds but there is an average 29% increase in price.
Most popular time to fly with an average 7% increase in price.
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 8464 reviews
7.9Comfort
7.2Food
7.8Entertainment
8.5Crew
8.1Boarding
Airline reviews

Seats in Delta Main are unbelievably close to the seat in front of. Hard to get a backpack under the seat.

8.0 ExcellentMatthew, May 2026
OKC - ATL
Read more Delta reviews

Seats in Delta Main are unbelievably close to the seat in front of. Hard to get a backpack under the seat.

The flight was operated by Latam. The aircraft had a technical issue and the flight was delayed for the next day. They grounded other passengers to get their airplane assigned to my flight. Most of he ground staff don't speak English (Orlando Airport), but were very polite.The crew on the other hand could speak English and Portuguese. On board service was good.

The agent at check in and at the gate were less than thrilled to be at work. I'm not a fan of Kayak's placement on the plane. I got put in the middle seat and none of my preferences were used.

In ATL they have two sets of departure screens. Follow what is on your airline's departure board - the ATL Airport Authority departure board had completely incorrect details about the gate assignment for my flight, which would have made me miss boarding.

Flight was delayed it was hot while sitting on the plane, one engine was working on the plane until they had to do some jimmy rigging down the runway in order for the other engine to charge up. It was ridiculous

The flight was very good and the staff was very friendly and helpful!

The only thing I would say is we tried to get on a standby earlier flight, but with our fair we couldn’t. That seems senseless to leave with open seats..

Very easy to use and convenient, you can perform any action within the same portal

In a world of delays, Delta was on time both ways! Boarding was fast and efficient. Staff was friendly. AND wifi worked.

WiFi didn’t work. Flight delayed 3 hours Crew members were illiterate Seat lean back did not work.

As per usual when you Hit the UK it's a slow process through customs Not as efficient at Thailand for sure

There were no charge points for phones on the economy seats. The seats were comfortable overall. Food was okay.. flight was on time

It was really nice experience by flying this klm flight.I personally recommend everyone to please try this klm flight

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

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

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.

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.

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

Information on your arrival and departure airports