$578+ Cheap flights from Portugal to St. Louis (STL)
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 4/27. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — STL
Dec 9 — Dec 161
Round-trip
1 adult, Economy
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1. Tell us where you want to go
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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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Portugal to St. Louis
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Cheapest flights from Portugal to St. LouisExplore the most affordable flight options available from Portugal to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 9, 2026.
Explore the most affordable flight options available from Portugal to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 9, 2026.
This Gotogate deal was found by Cheapflights users on 11/9. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/256:00 am -
1 stop13h 45m
Sun 11/293:40 pm -
1 stop14h 00m
Deal found 11/9![Lufthansa logo]()
$953
This Gotogate deal was found by Cheapflights users on 11/7. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/275:00 am -
1 stop14h 45m
Tue 12/14:05 pm -
1 stop11h 15m
Deal found 11/7![Multiple Airlines logo]()
$978
This United Airlines deal was found by Cheapflights users on 11/9. 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.
Wed 11/256:00 am -
1 stop13h 45m
Sun 11/295:00 pm -
1 stop10h 30m
Deal found 11/9![United Airlines logo]()
$982
This United Airlines deal was found by Cheapflights users on 11/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/275:00 am -
1 stop14h 45m
Tue 12/18:30 am -
2 stops17h 40m
Deal found 11/7![United Airlines logo]()
$993
This Delta deal was found by Cheapflights users on 11/7. 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.
Fri 11/275:25 am -
2 stops20h 06m
Tue 12/112:31 pm -
2 stops20h 39m
Deal found 11/7![Delta logo]()
$1,021
This Rumbo deal was found by Cheapflights users on 11/7. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2411:15 am -
2 stops16h 59m
Sat 11/288:12 pm -
2 stops56h 13m
Deal found 11/7![Multiple Airlines logo]()
$1,130
Best flights from Portugal to St. LouisDiscover carefully curated flight deals from Portugal to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 9, 2026.
Discover carefully curated flight deals from Portugal to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 9, 2026.
This United Airlines deal was found by Cheapflights users on 11/9. 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.
Wed 11/256:00 am -
1 stop13h 45m
Sun 11/297:30 am -
2 stops20h 00m
Deal found 11/9![United Airlines logo]()
$982
This Lufthansa deal was found by Cheapflights users on 11/9. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/256:00 am -
1 stop13h 45m
Sun 11/291:08 pm -
2 stops16h 32m
Deal found 11/9![Lufthansa logo]()
$987
This Rumbo deal was found by Cheapflights users on 11/7. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2411:15 am -
2 stops16h 59m
Sat 11/288:12 pm -
2 stops56h 13m
Deal found 11/7![Multiple Airlines logo]()
$1,130
This United Airlines deal was found by Cheapflights users on 11/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/176:00 am -
1 stop13h 45m
Sun 2/219:52 am -
1 stop17h 38m
Deal found 11/7![United Airlines logo]()
$984
This AranGrant deal was found by Cheapflights users on 11/8. 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 AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/188:20 am -
2 stops17h 12m
Tue 3/212:53 pm -
2 stops16h 52m
Deal found 11/8![Iberia logo]()
$1,973
This United Airlines deal was found by Cheapflights users on 11/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/295:00 am -
1 stop14h 45m
Tue 2/211:00 am -
1 stop15h 10m
Deal found 11/7![United Airlines logo]()
$991
This United Airlines deal was found by Cheapflights users on 11/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/275:00 am -
1 stop14h 45m
Tue 12/18:30 am -
2 stops17h 40m
Deal found 11/7![United Airlines logo]()
$993
This United Airlines deal was found by Cheapflights users on 11/6. 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.
Thu 1/286:00 am -
2 stops21h 37m
Mon 2/19:05 am -
2 stops24h 20m
Deal found 11/6![United Airlines logo]()
$998
This Mytrip deal was found by Cheapflights users on 11/7. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/275:00 pm -
2 stops28h 26m
Tue 12/19:40 am -
3 stops20h 10m
Deal found 11/7![Multiple Airlines logo]()
$1,938
This KAYAK deal was found by Cheapflights users on 11/5. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/176:00 am -
1 stop13h 45m
Tue 3/21:15 pm -
2 stops14h 15m
Deal found 11/5![Lufthansa logo]()
$3,441
This Expedia deal was found by Cheapflights users on 11/5. 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 2/182:20 pm -
2 stops55h 06m
Tue 3/24:05 pm -
2 stops39h 20m
Deal found 11/5![Multiple Airlines logo]()
$3,446
Last-minute flights from Portugal to St. LouisDiscover last-minute flight deals from Portugal to St. Louis. Data last updated November 9, 2026 and is based on user searches.
Discover last-minute flight deals from Portugal to St. Louis. Data last updated November 9, 2026 and is based on user searches.
This Rumbo deal was found by Cheapflights users on 11/7. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2411:15 am -
2 stops16h 59m
Sat 11/288:12 pm -
2 stops56h 13m
Deal found 11/7![Multiple Airlines logo]()
$1,130
This Gotogate deal was found by Cheapflights users on 11/9. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/256:00 am -
1 stop13h 45m
Sun 11/293:40 pm -
1 stop14h 00m
Deal found 11/9![Lufthansa logo]()
$953
This United Airlines deal was found by Cheapflights users on 11/9. 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.
Wed 11/256:00 am -
1 stop13h 45m
Sun 11/295:00 pm -
1 stop10h 30m
Deal found 11/9![United Airlines logo]()
$982
This Gotogate deal was found by Cheapflights users on 11/7. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/275:00 am -
1 stop14h 45m
Tue 12/14:05 pm -
1 stop11h 15m
Deal found 11/7![Multiple Airlines logo]()
$978
This United Airlines deal was found by Cheapflights users on 11/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/275:00 am -
1 stop14h 45m
Tue 12/18:30 am -
2 stops17h 40m
Deal found 11/7![United Airlines logo]()
$993
This Delta deal was found by Cheapflights users on 11/7. 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.
Fri 11/275:25 am -
2 stops20h 06m
Tue 12/112:31 pm -
2 stops20h 39m
Deal found 11/7![Delta logo]()
$1,021
One-way flights from Portugal to St. LouisSearch for one-way flight options from Portugal to St. Louis. Find affordable one-way fares based on user searches. Data last updated November 9, 2026.
Search for one-way flight options from Portugal to St. Louis. Find affordable one-way fares based on user searches. Data last updated November 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 11/8. 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.
Tue 4/276:50 am -
3 stops46h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Multiple Airlines logo]()
$578
This Expedia deal was found by Cheapflights users on 11/7. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/246:35 am -
2 stops21h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/7![Finnair logo]()
$618
This Expedia deal was found by Cheapflights users on 11/8. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/278:20 am -
2 stops19h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Iberia logo]()
$619
This Finnair deal was found by Cheapflights users on 11/5. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/146:35 am -
2 stops21h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![Finnair logo]()
$635
This Expedia deal was found by Cheapflights users on 11/5. 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.
Wed 4/1411:05 am -
1 stop14h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![British Airways logo]()
$641
This Expedia deal was found by Cheapflights users on 11/7. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/247:10 am -
1 stop15h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/7![British Airways logo]()
$646
This American Airlines deal was found by Cheapflights users on 11/8. 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.
Tue 4/2710:10 am -
1 stop15h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![American Airlines logo]()
$653
This Kiwi.com deal was found by Cheapflights users on 11/7. 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 4/2410:35 pm -
3 stops26h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/7![Multiple Airlines logo]()
$717
This Kiwi.com deal was found by Cheapflights users on 11/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/145:30 pm -
3 stops32h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![Multiple Airlines logo]()
$718
This Kiwi.com deal was found by Cheapflights users on 11/9. 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.
Sat 11/284:25 pm -
3 stops54h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Multiple Airlines logo]()
$871
This United Airlines deal was found by Cheapflights users on 11/9. 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.
Sat 11/2812:25 pm -
1 stop31h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![United Airlines logo]()
$1,320
Find flight deals from Portugal to St. Louis
Keep the following information in mind while searching for Portugal to St. Louis flight deals. Data was last updated November 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $953 (Gotogate) |
One-way from | $578 (Kiwi.com) |
Cheapflights Fare Finder
Customize your flight search to find flights from Portugal to St. Louis 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 7,457,451 searches. Data last updated November 9, 2026.
Use the filters below to find and compare flights from Portugal to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
LisbonSt. Louis
LIS Lisbon Humberto Delgado - STL Lambert-St Louis
LISSTL
Lisbon Humberto Delgado
Sat 4/24
6:35 am-10:17 pm
2 stops21h 42m
Lambert-St Louis
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$618
PortoSt. Louis
OPO Porto - STL Lambert-St Louis
OPOSTL
Porto
Tue 4/27
8:20 am-10:17 pm
2 stops19h 57m
Lambert-St Louis
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$619
LisbonSt. Louis
LIS Lisbon Humberto Delgado - STL Lambert-St Louis
LISSTL
Lisbon Humberto Delgado
Wed 4/14
6:35 am-10:17 pm
2 stops21h 42m
Lambert-St Louis
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$635
Quickest round-trip
LisbonSt. Louis
LIS Lisbon Humberto Delgado - STL Lambert-St Louis
LISSTL
Lisbon Humberto Delgado
Wed 4/14
11:05 am-7:27 pm
1 stop14h 22m
Lambert-St Louis
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$641
LisbonSt. Louis
LIS Lisbon Humberto Delgado - STL Lambert-St Louis
LISSTL
Lisbon Humberto Delgado
Sat 4/24
7:10 am-5:00 pm
1 stop15h 50m
Lambert-St Louis
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$646
PortoSt. Louis
OPO Porto - STL Lambert-St Louis
OPOSTL
Porto
Tue 4/27
10:10 am-7:27 pm
1 stop15h 17m
Lambert-St Louis
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$653
LisbonSt. Louis
LIS Lisbon Humberto Delgado - STL Lambert-St Louis
LISSTL
Lisbon Humberto Delgado
Sat 4/24
10:35 pm-7:33 pm
3 stops26h 58m
Lambert-St Louis
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$717
LisbonSt. Louis
LIS Lisbon Humberto Delgado - STL Lambert-St Louis
LISSTL
Lisbon Humberto Delgado
Wed 4/14
5:30 pm-7:33 pm
3 stops32h 03m
Lambert-St Louis
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$718
PortoSt. Louis
OPO Porto - STL Lambert-St Louis
OPOSTL
Porto
Wed 11/25
6:00 am-1:45 pm
1 stop13h 45m
Lambert-St Louis
Sun 11/29
7:30 am-9:30 am
2 stops20h 00m
$982
PortoSt. Louis
OPO Porto - STL Lambert-St Louis
OPOSTL
Porto
Wed 2/17
6:00 am-1:45 pm
1 stop13h 45m
Lambert-St Louis
Sun 2/21
9:52 am-9:30 am
1 stop17h 38m
$984
Showing 1-10 of 21 resultsSorted by cheapest first
Best time to book a flight from Portugal to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Portugal with our price prediction graph.
OPO-STL
LIS-STL
FAO-STL
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 Portugal to St. Louis
PT0-STL
OPO-STL
LIS-STL
FAO-STL
No data available for this route at this time. Please check back soon.
Related info for your journey
Find useful and relevant information for your journey from Portugal to St. Louis. 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 St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsFairview Heights
O'Fallon
Fenton
Swansea
Eureka
Wentzville
Maryland Heights
Chesterfield
Edwardsville
Glencoe
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