Cheap flights from St. Louis to Lisbon from $300
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Lisbon departing on 8/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from St. Louis to Lisbon
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Iberia flights from St. Louis to Lisbon
Our best Iberia deals on St. Louis to Lisbon flight tickets
Air Canada flights from St. Louis to Lisbon
Our best Air Canada deals on St. Louis to Lisbon flight tickets
See travel insights to Lisbon from
How to get the cheapest flight ticket from St. Louis to Lisbon
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Lisbon?
In general, November is the cheapest month to fly from St. Louis to Lisbon. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $641. If you are unable to visit Lisbon during the month of November, then departing from St. Louis during the month February is also very affordable. Most momondo users find prices during this month for around $672.
What is the cheapest day to depart on your flight to Lisbon?
Our data shows that Monday is the least expensive day to fly to Lisbon. Tickets to fly out on this day can be as low as $894. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from St. Louis to Lisbon for around $1,087.
What is the cheapest time of day to depart on your flight to Lisbon?
The cheapest time of day to fly to Lisbon is at noon when flights can be purchased for as low as $884. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,083 on average. Flights to Lisbon from St. Louis in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.
How far in advance should I book a flight to Lisbon?
You are more likely to see cheaper flights to Lisbon from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Lisbon for around $963 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Lisbon from St. Louis for as low as $916 on momondo.
What is the cheapest airline that flies from Lambert-St Louis to Lisbon Humberto Delgado?
United Airlines, Iberia, and Air Canada are the most popular carriers operating from Lambert-St Louis to Lisbon Humberto Delgado
What airlines fly to Lisbon?
Air Canada, United Airlines and American Airlines are the top three most popular airlines that fly to Lisbon from St. Louis according to our data. Air Canada is the first choice among our users, with 37% of people opting to fly with this airline when traveling to Lisbon. Keep in mind that there are 7 different airlines that fly to Lisbon on a routine basis, so you have a few additional options to choose from.
When to book flights from St. Louis to Lisbon
Cheap St. Louis to Lisbon (STL to LIS) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from St. Louis to Lisbon
How far is Lambert-St Louis to Lisbon Humberto Delgado by plane?
The distance between Lambert-St Louis and Lisbon Humberto Delgado is about 4210.2 mi. A reasonable flight in good conditions will take 10h 50m.
When did momondo last update prices for flights from Lambert-St Louis Airport to Lisbon Humberto Delgado Airport?
Prices for flights from Lambert-St Louis Airport to Lisbon Humberto Delgado Airport were last updated today.
How many operators does momondo search for flights from Lambert-St Louis Airport to Lisbon Humberto Delgado Airport?
There are 7 operators available for flights from Lambert-St Louis Airport to Lisbon Humberto Delgado Airport as of June 2025.
How old do you have to be to fly from Lambert-St Louis Airport to Lisbon Humberto Delgado Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Lisbon Humberto Delgado Airport.
What documentation or ID do you need to fly to Lisbon Humberto Delgado Airport?
The travel and health documents you'll need for your trip to Lisbon Humberto Delgado Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lisbon Humberto Delgado Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from St. Louis to Lisbon?
Based on momondo bookings for this flight route, the most popular airline on flight routes from St. Louis to Lisbon is Air Canada (32% of total bookings). The next most popular airlines are United Airlines (30%), American Airlines (17%), and Iberia (8%).
Best airlines flying from St. Louis to Lisbon
Compare and see reviews for airlines that fly from St. Louis to Lisbon with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $568 | Free Cancellation | Rating 7.0 2,811 reviews | |||
| PriceFrom $601 | Free Cancellation | Rating 6.8 7,201 reviews | |||
| PriceFrom $603 | Free Cancellation | Rating 7.4 8,852 reviews | |||
| PriceFrom $635 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $642 | Free Cancellation | Rating 6.6 7,081 reviews | |||
| PriceFrom $652 | Free Cancellation | Rating 8.0 7,969 reviews | |||
| PriceFrom $812 | Free Cancellation | Rating 7.1 9,657 reviews |
Traveling to a place near Lisbon?
Book flights to Lisbon if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from St. Louis to Lisbon?
It is quick and easy to find St. Louis to Lisbon flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Lisbon that suits you.
Can I find flights from St. Louis to Lisbon with flexible booking policies on momondo?
momondo does allow users to show only those flights to Lisbon from St. Louis which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from St. Louis to Lisbon?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Lisbon from St. Louis.
I’m not ready to book a flight from St. Louis to Lisbon right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Lisbon from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.