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$903+ Cheap flights from Portland (PDX) to Serbia

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — BEG
Jul 15 — Jul 221
Wed 7/15
Wed 7/22
1 adult, Economy
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Cheap flight deals from Portland to Serbia

Cheapest flights from Portland to Serbia
Explore the most affordable flight options available from Portland to Serbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 15, 2026.

This United deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/58:35 am
PDX
-
BEG
2 stops30h 00m
Multiple Airlines
Wed 8/128:00 pm
BEG
-
PDX
2 stops32h 11m
Multiple Airlines
Deal found 6/14$903
This Ticket deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/131:05 pm
PDX
-
BEG
1 stop24h 50m
KLM
Wed 7/2212:35 pm
BEG
-
PDX
1 stop31h 35m
KLM
Deal found 6/11$914
This FlightHub deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/118:15 am
PDX
-
BEG
2 stops19h 05m
Multiple Airlines
Sun 9/272:40 pm
BEG
-
PDX
2 stops37h 26m
Multiple Airlines
Deal found 6/14$941
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/133:30 pm
PDX
-
BEG
2 stops22h 25m
Delta
Wed 7/2212:35 pm
BEG
-
PDX
2 stops41h 38m
Delta
Deal found 6/11$942
This United Airlines deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/55:15 am
PDX
-
BEG
3 stops25h 50m
United Airlines
Wed 8/124:50 pm
BEG
-
PDX
2 stops35h 03m
United Airlines
Deal found 6/14$945
This Expedia deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/812:03 pm
PDX
-
BEG
2 stops25h 17m
Multiple Airlines
Tue 10/66:55 am
BEG
-
PDX
2 stops22h 55m
Multiple Airlines
Deal found 6/14$950
This United Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/138:35 am
PDX
-
BEG
2 stops22h 35m
United Airlines
Wed 7/226:10 am
BEG
-
PDX
2 stops23h 09m
United Airlines
Deal found 6/11$977

Find flight deals from Portland to Serbia

Keep the following information in mind while searching for Portland to Serbia flight deals. Data was last updated June 15, 2026.

Round-trip from

$903
(United)

Popular in

June

Cheapest in

November

Average price

$1,352
From Portland to Serbia
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($172 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Serbia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 15, 2026.
Use the filters below to find and compare flights from Portland to Serbia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandBelgrade

PDX - BEG

PDXBEG

Portland

Mon 7/13

10:40 pm-10:55 pm

2 stops39h 15m

Belgrade Nikola Tesla

Wed 7/22

12:35 pm-11:10 am

1 stop31h 35m

$937

PortlandBelgrade

PDX - BEG

PDXBEG

Portland

Fri 9/11

3:27 pm-4:25 pm

3 stops39h 58m

Belgrade Nikola Tesla

Sun 9/27

1:05 pm-9:31 am

2 stops29h 26m

$970
Quickest round-trip

PortlandBelgrade

PDX - BEG

PDXBEG

Portland

Mon 7/13

8:35 am-4:10 pm

2 stops22h 35m

Belgrade Nikola Tesla

Wed 7/22

6:10 am-8:19 pm

2 stops23h 09m

$977

PortlandBelgrade

PDX - BEG

PDXBEG

Portland

Mon 7/13

3:30 pm-10:20 pm

1 stop21h 50m

Belgrade Nikola Tesla

Wed 7/22

6:55 am-11:52 pm

2 stops25h 57m

$1,058

PortlandBelgrade

PDX - BEG

PDXBEG

Portland

Wed 8/5

1:05 pm-10:55 pm

1 stop24h 50m

Belgrade Nikola Tesla

Wed 8/12

5:45 pm-11:10 am

1 stop26h 25m

$1,265

PortlandBelgrade

PDX - BEG

PDXBEG

Portland

Thu 7/9

8:35 am-7:35 pm

2 stops26h 00m

Belgrade Nikola Tesla

Sun 10/4

8:25 pm-2:27 pm

2 stops27h 02m

$1,759

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Sorted by cheapest first

Best time to book a flight from Portland to Serbia

Have a flexible travel schedule? Discover the best time to fly to Serbia from Portland with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Portland to Serbia?

Currently, February is the cheapest month in which you can book a flight from Portland to Serbia (average of $534). Flying from Portland to Serbia in June is currently the most expensive (average of $1,352). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Serbia

Get insights into the airlines that provide service to Serbia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Serbia. Reviews last updated June 15, 2026.
See what other customers who have flown with Delta and KLM from Portland to Serbia have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,395 reviews

Crew

8.5

Food

7.2

Overall

7.9

Boarding

8.1

Comfort

7.8

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Delta
7.9
Good
8,395 reviews
Delta
7.9
Good
8,395 reviews

Crew

8.5

Food

7.2

Overall

7.9

Boarding

8.1

Comfort

7.8

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
KLM
7.8
Good
1,528 reviews
Delta
7.9
Good
8,395 reviews

Crew

8.5

Food

7.2

Overall

7.9

Boarding

8.1

Comfort

7.8

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

Related info for your journey

Find useful and relevant information for your journey from Portland to Serbia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Portland to Serbia?

    Portland (PDX), located 6.0 mi from the city center, is the airport you fly out of when you book flights from Portland to Serbia.

  • How long is the flight from Portland to Serbia?

    There are many flights that can get you from Portland to Serbia in 39h 15m. Fly via Delta to get the fastest option. The distance between Portland and Serbia is about 5788 mi.

  • Can I find deals for flights from Portland to Serbia that include hotel bookings?

    Yes. In addition to deals on Portland to Serbia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Serbia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Serbia.

  • Can I find deals for business class flights from Portland to Serbia?

    Yes. Cheapflights offers flight deals from Portland to Serbia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Portland to Serbia?

    Currently, February is the cheapest month in which you can book a flight from Portland to Serbia (average of $534). Flying from Portland to Serbia in June is currently the most expensive (average of $1,352). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Portland to Serbia

Discover the top 2 airlines that operate flights from Portland to Serbia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$583Average$960FlexibilityNo cancel feeOn-time75%
DeltaCheapest$657Average$866FlexibilityNo cancel feeOn-timeN/A

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