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Portugal

$436+ Cheap flights from Missouri to Portugal

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 8/14. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LIS
Jun 8 — Jun 151
Mon 6/8
Mon 6/15
1 adult, Economy
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Cheap flight deals from Missouri to Portugal

Cheapest flights from Missouri to Portugal
Explore the most affordable flight options available from Missouri to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 9, 2026.

This United Airlines deal was found by Cheapflights users on 5/8. 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.
Sat 11/75:45 pm
MCI
-
OPO
2 stops33h 45m
United Airlines
Thu 11/126:00 am
OPO
-
MCI
2 stops21h 49m
United Airlines
Deal found 5/8$723
This United Airlines deal was found by Cheapflights users on 5/8. 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 12/110:00 am
MCI
-
OPO
2 stops17h 30m
United Airlines
Fri 12/412:30 pm
OPO
-
MCI
2 stops36h 12m
United Airlines
Deal found 5/8$728
This Delta deal was found by Cheapflights users on 5/8. 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.
Tue 10/279:59 am
MCI
-
LIS
1 stop17h 01m
Delta
Tue 11/105:00 am
LIS
-
MCI
2 stops20h 09m
Delta
Deal found 5/8$736
This United Airlines deal was found by Cheapflights users on 5/8. 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 12/16:30 am
STL
-
OPO
1 stop21h 00m
United Airlines
Fri 12/46:00 am
OPO
-
STL
1 stop13h 55m
United Airlines
Deal found 5/8$736
This Delta deal was found by Cheapflights users on 5/8. 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.
Sun 11/15:40 am
MCI
-
LIS
2 stops20h 20m
Delta
Wed 11/45:00 am
LIS
-
MCI
2 stops19h 46m
Delta
Deal found 5/8$740
This FlightHub deal was found by Cheapflights users on 5/6. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/311:30 am
MCI
-
LIS
2 stops17h 30m
Multiple Airlines
Mon 11/912:35 pm
LIS
-
MCI
2 stops39h 14m
Multiple Airlines
Deal found 5/6$745
This United Airlines deal was found by Cheapflights users on 5/7. 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.
Sun 12/66:00 am
MCI
-
LIS
1 stop20h 10m
United Airlines
Wed 12/910:15 am
LIS
-
MCI
1 stop18h 14m
United Airlines
Deal found 5/7$746
This KLM deal was found by Cheapflights users on 5/8. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2710:10 am
MCI
-
LIS
1 stop17h 50m
Multiple Airlines
Tue 11/1010:00 am
LIS
-
MCI
1 stop15h 09m
Multiple Airlines
Deal found 5/8$747
This Gotogate deal was found by Cheapflights users on 5/7. 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.
Mon 10/264:15 pm
STL
-
LIS
1 stop13h 45m
Multiple Airlines
Wed 11/45:00 am
LIS
-
STL
1 stop14h 55m
Multiple Airlines
Deal found 5/7$758
This KAYAK deal was found by Cheapflights users on 5/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/43:42 pm
STL
-
LIS
2 stops18h 23m
Scandinavian Airlines
Tue 11/104:55 pm
LIS
-
STL
2 stops36h 44m
Scandinavian Airlines
Deal found 5/8$770
This American Airlines deal was found by Cheapflights users on 5/8. 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 10/2711:31 am
MCI
-
LIS
2 stops15h 09m
American Airlines
Tue 11/107:05 am
LIS
-
MCI
2 stops18h 08m
American Airlines
Deal found 5/8$774
This United Airlines deal was found by Cheapflights users on 5/7. 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.
Tue 11/36:30 am
STL
-
LIS
2 stops21h 20m
United Airlines
Fri 11/135:00 am
LIS
-
STL
1 stop14h 55m
United Airlines
Deal found 5/7$777

Find flight deals from Missouri to Portugal

Keep the following information in mind while searching for Missouri to Portugal flight deals. Data was last updated May 9, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$736
(Delta)

One-way from

$436
(Kiwi.com)

Popular in

December

Cheapest in

April

Average price

$981
Provider with most accurate pricing for Lambert-St Louis-Lisbon Humberto Delgado flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Lisbon Humberto Delgado flights.
Search Deals
From Missouri to Portugal
Search Deals
One-way flight from Missouri to Portugal
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($315 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 16% potential price decrease ($149 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Missouri to Portugal 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 May 9, 2026.
Use the filters below to find and compare flights from Missouri to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisLisbon

STL - LIS

STLLIS

Lambert-St Louis

Wed 11/4

6:30 am-8:10 am

1 stop19h 40m

Lisbon Humberto Delgado

Tue 11/10

11:20 am-4:40 pm

2 stops35h 20m

$780

Kansas CityLisbon

MCI - LIS

MCILIS

Kansas City

Thu 11/5

9:59 am-8:00 am

1 stop16h 01m

Lisbon Humberto Delgado

Thu 11/12

5:00 am-7:09 pm

2 stops20h 09m

$786

Kansas CityLisbon

MCI - LIS

MCILIS

Kansas City

Tue 11/3

10:10 am-9:00 am

1 stop16h 50m

Lisbon Humberto Delgado

Mon 11/9

5:00 am-5:32 pm

2 stops18h 32m

$787

Kansas CityLisbon

MCI - LIS

MCILIS

Kansas City

Thu 11/5

9:59 am-8:00 am

1 stop16h 01m

Lisbon Humberto Delgado

Thu 11/12

10:00 am-7:09 pm

1 stop15h 09m

$797

Kansas CityLisbon

MCI - LIS

MCILIS

Kansas City

Tue 11/3

9:59 am-8:00 am

1 stop16h 01m

Lisbon Humberto Delgado

Mon 11/9

10:00 am-7:09 pm

1 stop15h 09m

$797

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Sun 10/4

8:15 pm-7:00 am

2 stops28h 45m

Porto

Wed 10/21

12:45 pm-9:24 pm

2 stops38h 39m

$832

St. LouisLisbon

STL - LIS

STLLIS

Lambert-St Louis

Tue 11/3

6:30 am-8:10 am

1 stop19h 40m

Lisbon Humberto Delgado

Mon 11/9

1:00 pm-3:38 pm

2 stops32h 38m

$836

Kansas CityLisbon

MCI - LIS

MCILIS

Kansas City

Wed 10/21

9:59 am-8:00 am

1 stop16h 01m

Lisbon Humberto Delgado

Wed 10/28

10:00 am-7:09 pm

1 stop14h 09m

$871

Kansas CityLisbon

MCI - LIS

MCILIS

Kansas City

Tue 10/27

12:45 pm-10:15 am

1 stop16h 30m

Lisbon Humberto Delgado

Tue 11/10

11:55 am-7:32 pm

1 stop13h 37m

$894

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Sat 8/15

5:45 pm-6:55 am

2 stops31h 10m

Porto

Sun 8/23

6:00 am-12:48 am

2 stops24h 48m

$895

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/9

Showing 1-10 of 55 resultsSorted by cheapest first
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Best time to book a flight from Missouri to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from Missouri 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 Missouri to Portugal

How far ahead should I book a flight from Missouri to Portugal?

To ensure you get the cheapest price possible for a flight from Missouri to Portugal, you should look to book at least 81 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Missouri to Portugal?

Currently, March is the cheapest month in which you can book a flight from Missouri to Portugal (average of $458). Flying from Missouri to Portugal in July is currently the most expensive (average of $754). 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.

Related info for your journey

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

  • How long is the flight from Missouri to Portugal?

    Delta, United Airlines, and KLM can get you from Missouri to Portugal in just under 16h 01m. Your travel time can differ by up to 3h 39m. Missouri and Portugal are separated by a distance of 4398 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Missouri to Portugal that include hotel bookings?

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

  • How can I find direct flights from Missouri to Portugal?

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

  • Can I find deals for business class flights from Missouri to Portugal?

    Yes. Cheapflights offers flight deals from Missouri to Portugal 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 Missouri to Portugal?

    Currently, March is the cheapest month in which you can book a flight from Missouri to Portugal (average of $458). Flying from Missouri to Portugal in July is currently the most expensive (average of $754). 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

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Alternative routes for Missouri to Portugal

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Missouri to Portugal

Discover the top 8 airlines that operate flights from Missouri to Portugal. 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 May 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$493Average$766FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$505Average$984FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$508Average$758FlexibilityNo cancel feeOn-time70%
IberiaCheapest$525Average$713FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$533Average$966FlexibilityNo cancel feeOn-time69%
DeltaCheapest$551Average$733FlexibilityNo cancel feeOn-timeN/A
Virgin AtlanticCheapest$553Average$796FlexibilityNo cancel feeOn-time72%
Air CanadaCheapest$675Average$1,155FlexibilityNo cancel feeOn-time67%

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