$296+ Cheap flights from Portland (PDX) to Lisbon (LIS)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/31. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LIS
Sep 9 — Sep 161
Round-trip
1 adult, Economy
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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Last-minute
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Cheapest flights from Portland to LisbonExplore the most affordable flight options available from Portland to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 10, 2026.
Explore the most affordable flight options available from Portland to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 10, 2026.
This United Airlines deal was found by Cheapflights users on 8/5. 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.
Tue 10/2010:58 am -
1 stop13h 22m
Tue 11/1012:20 pm -
1 stop15h 55m
Deal found 8/5![United Airlines logo]()
$766
This Expedia deal was found by Cheapflights users on 8/5. 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.
Fri 11/67:00 am -
2 stops18h 20m
Fri 11/135:00 am -
2 stops17h 41m
Deal found 8/5![Multiple Airlines logo]()
$769
This United Airlines deal was found by Cheapflights users on 8/6. 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.
Sun 11/2211:30 pm -
2 stops27h 10m
Fri 12/412:20 pm -
1 stop16h 05m
Deal found 8/6![United Airlines logo]()
$770
This Expedia deal was found by Cheapflights users on 8/5. 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.
Thu 11/57:00 am -
2 stops18h 20m
Tue 11/175:00 am -
2 stops21h 31m
Deal found 8/5![Multiple Airlines logo]()
$773
This Air Canada deal was found by Cheapflights users on 8/5. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/127:45 pm -
2 stops29h 35m
Tue 10/206:45 am -
2 stops20h 21m
Deal found 8/5![Air Canada logo]()
$774
This Air Canada deal was found by Cheapflights users on 8/5. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1410:10 am -
2 stops16h 55m
Wed 10/215:05 am -
2 stops17h 46m
Deal found 8/5![Multiple Airlines logo]()
$778
This Delta deal was found by Cheapflights users on 8/5. 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.
Wed 10/141:00 pm -
2 stops20h 50m
Wed 10/215:00 am -
1 stop14h 10m
Deal found 8/5![Delta logo]()
$780
This Expedia deal was found by Cheapflights users on 8/5. 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.
Fri 11/65:45 pm -
1 stop16h 10m
Fri 11/1311:05 am -
1 stop18h 58m
Deal found 8/5![British Airways logo]()
$785
This Delta deal was found by Cheapflights users on 8/9. 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.
Sat 10/1710:15 pm -
1 stop25h 45m
Fri 10/305:00 am -
1 stop14h 20m
Deal found 8/9![Delta logo]()
$787
This United Airlines deal was found by Cheapflights users on 8/9. 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.
Sun 10/185:30 am -
2 stops19h 50m
Wed 10/285:00 am -
2 stops24h 59m
Deal found 8/9![United Airlines logo]()
$788
This FlightHub deal was found by Cheapflights users on 8/10. 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.
Wed 11/117:00 am -
2 stops17h 55m
Mon 11/1611:50 am -
2 stops43h 22m
Deal found 8/10![Multiple Airlines logo]()
$790
This FlightHub deal was found by Cheapflights users on 8/7. 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.
Thu 10/223:30 pm -
2 stops33h 50m
Wed 11/45:00 am -
2 stops22h 12m
Deal found 8/7![Lufthansa logo]()
$791
Best flights from Portland to LisbonDiscover carefully curated flight deals from Portland to Lisbon that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 10, 2026.
Discover carefully curated flight deals from Portland to Lisbon that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 10, 2026.
This United Airlines deal was found by Cheapflights users on 8/5. 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.
Tue 10/2010:58 am -
1 stop13h 22m
Tue 11/1012:20 pm -
1 stop15h 55m
Deal found 8/5![United Airlines logo]()
$766
This Delta deal was found by Cheapflights users on 8/9. 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.
Sun 9/2712:25 am -
2 stops23h 35m
Mon 10/1211:55 am -
1 stop31h 15m
Deal found 8/9![Delta logo]()
$804
This British Airways deal was found by Cheapflights users on 8/5. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/115:45 pm -
1 stop32h 05m
Thu 1/143:55 pm -
1 stop31h 55m
Deal found 8/5![British Airways logo]()
$812
This KLM deal was found by Cheapflights users on 8/9. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/181:05 pm -
1 stop17h 30m
Sun 10/255:00 am -
1 stop14h 20m
Deal found 8/9![KLM logo]()
$906
This United Airlines deal was found by Cheapflights users on 8/5. 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.
Thu 11/58:30 am -
1 stop17h 50m
Tue 11/1712:50 pm -
2 stops39h 25m
Deal found 8/5![United Airlines logo]()
$796
This Delta deal was found by Cheapflights users on 8/9. 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.
Thu 11/57:00 am -
1 stop17h 00m
Thu 11/1910:00 am -
1 stop19h 57m
Deal found 8/9![Delta logo]()
$816
This KLM deal was found by Cheapflights users on 8/7. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/11:05 pm -
1 stop17h 30m
Sat 10/105:00 am -
1 stop14h 10m
Deal found 8/7![KLM logo]()
$930
This Delta deal was found by Cheapflights users on 8/5. 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.
Fri 10/309:31 am -
2 stops22h 39m
Sun 11/85:00 am -
1 stop14h 20m
Deal found 8/5![Delta logo]()
$850
This United Airlines deal was found by Cheapflights users on 8/10. 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 9/287:02 am -
2 stops18h 18m
Mon 10/2611:20 am -
3 stops40h 42m
Deal found 8/10![United Airlines logo]()
$889
This United Airlines deal was found by Cheapflights users on 8/6. 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 10/1210:58 am -
1 stop13h 22m
Mon 10/1910:25 am -
1 stop31h 25m
Deal found 8/6![United Airlines logo]()
$894
This Delta deal was found by Cheapflights users on 8/8. 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.
Fri 10/27:00 am -
2 stops20h 15m
Sat 10/105:00 am -
1 stop14h 10m
Deal found 8/8![Delta logo]()
$930
This United Airlines deal was found by Cheapflights users on 8/10. 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.
Fri 10/1610:33 pm -
1 stop25h 47m
Sun 10/2510:50 am -
2 stops53h 46m
Deal found 8/10![United Airlines logo]()
$920
Last-minute flights from Portland to LisbonDiscover last-minute flight deals from Portland to Lisbon. Data last updated August 10, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Lisbon. Data last updated August 10, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 8/8. 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 9/2111:02 pm -
2 stops27h 28m
Wed 9/3011:25 am -
2 stops38h 21m
Deal found 8/8![United Airlines logo]()
$811
This United Airlines deal was found by Cheapflights users on 8/5. 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 9/218:25 am -
1 stop18h 05m
Thu 10/15:05 am -
2 stops25h 18m
Deal found 8/5![United Airlines logo]()
$815
This FlightHub deal was found by Cheapflights users on 8/5. 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.
Mon 9/2110:10 am -
2 stops16h 50m
Thu 10/15:05 am -
2 stops25h 18m
Deal found 8/5![Multiple Airlines logo]()
$818
This United Airlines deal was found by Cheapflights users on 8/8. 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.
Tue 9/228:25 am -
1 stop18h 05m
Tue 10/611:25 am -
2 stops41h 45m
Deal found 8/8![United Airlines logo]()
$806
This Delta deal was found by Cheapflights users on 8/10. 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.
Tue 9/2212:45 pm -
2 stops21h 05m
Wed 9/305:00 am -
1 stop14h 10m
Deal found 8/10![Delta logo]()
$810
This CheapOair deal was found by Cheapflights users on 8/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/227:02 am -
2 stops32h 23m
Wed 9/305:05 am -
2 stops17h 41m
Deal found 8/9![Multiple Airlines logo]()
$814
This Delta deal was found by Cheapflights users on 8/7. 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.
Sat 9/2612:50 pm -
2 stops21h 00m
Fri 10/165:00 am -
2 stops20h 04m
Deal found 8/7![Delta logo]()
$819
This Justfly.com deal was found by Cheapflights users on 8/5. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2710:10 am -
2 stops39h 10m
Tue 10/66:25 pm -
2 stops32h 41m
Deal found 8/5![Multiple Airlines logo]()
$793
This Delta deal was found by Cheapflights users on 8/5. 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.
Sun 9/2712:25 am -
2 stops23h 35m
Mon 10/1211:55 am -
1 stop31h 15m
Deal found 8/5![Delta logo]()
$802
One-way flights from Portland to LisbonSearch for one-way flight options from Portland to Lisbon. Find affordable one-way fares based on user searches. Data last updated August 10, 2026.
Search for one-way flight options from Portland to Lisbon. Find affordable one-way fares based on user searches. Data last updated August 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/313:45 pm -
3 stops58h 10m
Deal found 8/8![Multiple Airlines logo]()
$296
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/53:30 pm -
3 stops23h 30m
Deal found 8/10![Multiple Airlines logo]()
$302
This Kiwi.com deal was found by Cheapflights users on 8/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/33:30 pm -
3 stops48h 40m
Deal found 8/6![Multiple Airlines logo]()
$325
This Kiwi.com deal was found by Cheapflights users on 8/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/47:00 pm -
2 stops51h 55m
Deal found 8/6![Multiple Airlines logo]()
$333
This Kiwi.com deal was found by Cheapflights users on 8/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/83:30 pm -
3 stops47h 55m
Deal found 8/6![Multiple Airlines logo]()
$337
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/263:30 pm -
3 stops42h 25m
Deal found 8/7![Multiple Airlines logo]()
$341
This Kiwi.com deal was found by Cheapflights users on 8/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/165:30 pm -
2 stops43h 05m
Deal found 8/9![Multiple Airlines logo]()
$364
This American Airlines deal was found by Cheapflights users on 8/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/21:12 pm -
2 stops17h 38m
Deal found 8/8![American Airlines logo]()
$367
Find flight deals from Portland to Lisbon
Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Lisbon (LIS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $766 (United Airlines) |
One-way from | $296 (Kiwi.com) |
Popular in | June |
Cheapest in | February |
Average price | $981 |
Cheapflights Fare Finder
Customize your flight search to find flights from Portland to Lisbon 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 August 10, 2026.
Use the filters below to find and compare flights from Portland to Lisbon that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
PortlandLisbon
PDX Portland - LIS Lisbon Humberto Delgado
PDXLIS
Portland
Tue 10/20
10:58 am-8:20 am
1 stop13h 22m
Lisbon Humberto Delgado
Tue 11/10
12:20 pm-8:15 pm
1 stop15h 55m
$766
PortlandLisbon
PDX Portland - LIS Lisbon Humberto Delgado
PDXLIS
Portland
Thu 11/5
8:30 am-10:20 am
1 stop17h 50m
Lisbon Humberto Delgado
Tue 11/17
12:50 pm-8:15 pm
2 stops39h 25m
$796
PortlandLisbon
PDX Portland - LIS Lisbon Humberto Delgado
PDXLIS
Portland
Sun 9/27
12:25 am-8:00 am
2 stops23h 35m
Lisbon Humberto Delgado
Mon 10/12
11:55 am-11:10 am
1 stop31h 15m
$804
PortlandLisbon
PDX Portland - LIS Lisbon Humberto Delgado
PDXLIS
Portland
Mon 1/11
5:45 pm-9:50 am
1 stop32h 05m
Lisbon Humberto Delgado
Thu 1/14
3:55 pm-3:50 pm
1 stop31h 55m
$812
PortlandLisbon
PDX Portland - LIS Lisbon Humberto Delgado
PDXLIS
Portland
Thu 11/5
7:00 am-8:00 am
1 stop17h 00m
Lisbon Humberto Delgado
Thu 11/19
10:00 am-9:57 pm
1 stop19h 57m
$816
PortlandLisbon
PDX Portland - LIS Lisbon Humberto Delgado
PDXLIS
Portland
Fri 10/30
9:31 am-3:10 pm
2 stops22h 39m
Lisbon Humberto Delgado
Sun 11/8
5:00 am-11:20 am
1 stop14h 20m
$850
PortlandLisbon
PDX Portland - LIS Lisbon Humberto Delgado
PDXLIS
Portland
Mon 9/28
7:02 am-9:20 am
2 stops18h 18m
Lisbon Humberto Delgado
Mon 10/26
11:20 am-9:02 pm
3 stops40h 42m
$889
PortlandLisbon
PDX Portland - LIS Lisbon Humberto Delgado
PDXLIS
Portland
Mon 10/12
10:58 am-8:20 am
1 stop13h 22m
Lisbon Humberto Delgado
Mon 10/19
10:25 am-9:50 am
1 stop31h 25m
$894
PortlandLisbon
PDX Portland - LIS Lisbon Humberto Delgado
PDXLIS
Portland
Sun 10/18
1:05 pm-2:35 pm
1 stop17h 30m
Lisbon Humberto Delgado
Sun 10/25
5:00 am-12:20 pm
1 stop14h 20m
$906
PortlandLisbon
PDX Portland - LIS Lisbon Humberto Delgado
PDXLIS
Portland
Fri 10/16
10:33 pm-8:20 am
1 stop25h 47m
Lisbon Humberto Delgado
Sun 10/25
10:50 am-9:36 am
2 stops53h 46m
$920
Showing 1-10 of 22 resultsSorted by cheapest first
Compare providers for flights from Portland to Lisbon
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Lisbon in August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Portland-Lisbon flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-Lisbon flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland-Lisbon flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Portland-Lisbon flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland-Lisbon flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Portland to Lisbon
Have a flexible travel schedule? Discover the best time to fly to Lisbon from Portland with our price prediction graph.
PDX-LIS
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 Lisbon
How far ahead should I book a flight from Portland to Lisbon?
The price you pay for your flight from Portland to Lisbon may vary depending on when you book. For the best chance of a lower fare, look to book 12 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Portland to Lisbon?
Currently, February is the cheapest month in which you can book a flight from Portland to Lisbon (average of $598). Flying from Portland to Lisbon in June is currently the most expensive (average of $1,347). 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.
How much does it cost to fly round-trip from Portland to Lisbon?
Airfare is typical for this route at the moment.
Portland to Lisbon flights typically cost between $655 and $1,049 in October.The cheapest round-trip price found within the last 5 days was $766 on United Airlines (Oct 20-Nov 10).
Reviews of airlines servicing Lisbon
Get insights into the airlines that provide service to Lisbon. 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 Lisbon. Reviews last updated August 10, 2026.
Read reviews from past customers who have flown KLM,Delta, andUnited Airlines from Portland to Lisbon. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.7
Crew
8.4
Boarding
7.8
Overall
7.8
Entertainment
7.2
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Comfort
7.7
Crew
8.4
Boarding
7.8
Overall
7.8
Entertainment
7.2
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Comfort
7.7
Crew
8.4
Boarding
7.8
Overall
7.8
Entertainment
7.2
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Comfort
7.7
Crew
8.4
Boarding
7.8
Overall
7.8
Entertainment
7.2
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Comfort
7.7
Crew
8.4
Boarding
7.8
Overall
7.8
Entertainment
7.2
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Comfort
7.7
Crew
8.4
Boarding
7.8
Overall
7.8
Entertainment
7.2
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Related info for your journey
Find useful and relevant information for your journey from Portland to Lisbon. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Lisbon?
Book flights to Lisbon if you plan to visit one of these locationsFátima
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Top 8 airlines flying from Portland to Lisbon
Discover the top 8 airlines that operate flights from Portland to Lisbon. 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 August 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$318 | Average$448 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$360 | Average$537 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$492 | Average$918 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$492 | Average$964 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$501 | Average$555 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$509 | Average$902 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$549 | Average$995 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$584 | Average$808 | FlexibilityNo cancel fee | On-time67% |