$639 Cheap Flights from St. Louis (STL) to Riyadh (RUH)

View $639 flight on Wed, Apr 15, 2026Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to King Khaled Intl. Airport (RUH)

Cheap Flights from St. Louis to Riyadh (STL-RUH)

Prices were available within the past 7 days and start at $639 for one-way flights and $859 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sun, Nov 16 - Wed, Dec 3
STL
St. Louis
RUH
Riyadh
$859 Roundtrip, found 1 day ago
$859
Roundtrip
found 1 day ago
Select United flight, departing Sun, Nov 16 from St. Louis to Riyadh, returning Wed, Dec 3, priced at $859 found 1 day ago
United
Sun, Nov 16 - Tue, Dec 2
STL
St. Louis
RUH
Riyadh
$865 Roundtrip, found 1 day ago
$865
Roundtrip
found 1 day ago
Select United flight, departing Sun, Nov 16 from St. Louis to Riyadh, returning Tue, Dec 2, priced at $865 found 1 day ago
United
Mon, Nov 10 - Sun, Nov 23
STL
St. Louis
RUH
Riyadh
$877 Roundtrip, found 1 day ago
$877
Roundtrip
found 1 day ago
Select United flight, departing Mon, Nov 10 from St. Louis to Riyadh, returning Sun, Nov 23, priced at $877 found 1 day ago
Lufthansa
Wed, Nov 12 - Wed, Dec 3
STL
St. Louis
RUH
Riyadh
$878 Roundtrip, found 1 day ago
$878
Roundtrip
found 1 day ago
Select Lufthansa flight, departing Wed, Nov 12 from St. Louis to Riyadh, returning Wed, Dec 3, priced at $878 found 1 day ago
United
Mon, Nov 10 - Tue, Nov 25
STL
St. Louis
RUH
Riyadh
$880 Roundtrip, found 1 day ago
$880
Roundtrip
found 1 day ago
Select United flight, departing Mon, Nov 10 from St. Louis to Riyadh, returning Tue, Nov 25, priced at $880 found 1 day ago
United
Mon, Nov 10 - Sat, Nov 22
STL
St. Louis
RUH
Riyadh
$883 Roundtrip, found 1 day ago
$883
Roundtrip
found 1 day ago
Select United flight, departing Mon, Nov 10 from St. Louis to Riyadh, returning Sat, Nov 22, priced at $883 found 1 day ago
Lufthansa
Wed, Nov 12 - Tue, Dec 2
STL
St. Louis
RUH
Riyadh
$884 Roundtrip, found 1 day ago
$884
Roundtrip
found 1 day ago
Select Lufthansa flight, departing Wed, Nov 12 from St. Louis to Riyadh, returning Tue, Dec 2, priced at $884 found 1 day ago
Air Canada
Mon, Jan 26 - Wed, Feb 4
STL
St. Louis
RUH
Riyadh
$887 Roundtrip, found 3 days ago
$887
Roundtrip
found 3 days ago
Select Air Canada flight, departing Mon, Jan 26 from St. Louis to Riyadh, returning Wed, Feb 4, priced at $887 found 3 days ago
Delta
Mon, Jan 12 - Tue, Jan 27
STL
St. Louis
RUH
Riyadh
$914 Roundtrip, found 1 day ago
$914
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, Jan 12 from St. Louis to Riyadh, returning Tue, Jan 27, priced at $914 found 1 day ago
Virgin Atlantic
Wed, Dec 31 - Thu, Jan 15
STL
St. Louis
RUH
Riyadh
$935 Roundtrip, found 1 day ago
$935
Roundtrip
found 1 day ago
Select Virgin Atlantic flight, departing Wed, Dec 31 from St. Louis to Riyadh, returning Thu, Jan 15, priced at $935 found 1 day ago

Alternative airports near Riyadh

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to King Khaled Intl. RUH. Cheapest and Closest option available. Average driving time to city center is 25 minutes. Flights from $1,229
RUH
King Khaled Intl.
CheapestClosest
Average driving time to city center25 min
Flights from $1,229

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to King Khaled Intl. Airport (RUH) cost?
Grab a cheap one-way flight from $639 or cheap return flight from $859 from Lambert-St. Louis Intl. Airport (STL) to King Khaled Intl. Airport (RUH) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to King Khaled Intl. Airport (RUH)?
November is the least expensive month to fly from STL to RUH. Planning your trip for the off-season is often the key to finding a great deal.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to King Khaled Intl. Airport (RUH)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest STL to RUH flight.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to King Khaled Intl. Airport (RUH)?
There are no daily direct flights departing from Lambert-St. Louis Intl. Airport (STL) to King Khaled Intl. Airport (RUH). But you can book flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be on your way in no time.
What day of the week has the most flights from STL to RUH?
Typically you'll find the widest variety of flight choices on a Friday. Tuesdays are often the quietest.* But this can change based on the season, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to King Khaled Intl. Airport (RUH)?
Select a flight from Lambert-St. Louis Intl. Airport (STL) to King Khaled Intl. Airport (RUH) that leaves before 3 PM to reduce the risk of cancellations. Departures after this time have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to King Khaled Intl. Airport (RUH) last-minute?
Waiting until just before your trip to book your flight from STL to RUH generally means paying more. While it's possible to find some last-minute discounts, there's no guarantee. Be flexible with your travel plans for the best chance of getting a bargain.
Is it cheaper to book a STL to RUH flight and hotel package?
You'll typically save money by securing a STL to RUH flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one place. Once you've chosen your preferred flights and accommodations, you can add extras such as activities, car rentals and tours.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to King Khaled Intl. Airport (RUH)?
If you booked your STL to RUH flight within the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more details.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
King Khaled Intl.
Airlines serving
Air Canada, Air France, American Airlines, British Airways, Cathay Pacific, Delta, KLM, Lufthansa, Qatar Airways, United, Virgin Atlantic
Roundtrip price
$858
Distance
7233 mi

Book with confidence

St. Louis to Riyadh Flights

The cheapest times to fly from St. Louis to Riyadh

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Louis to Riyadh are during the month of November. You can find some of the cheapest flights from St. Louis to Riyadh with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to Riyadh

Sunday is one of the best days to book for cheap flights from St. Louis to Riyadh: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. Louis to Riyadh

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Louis to Riyadh in 2025. You can also book with separate airlines for your outbound and return journeys, from $639 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Louis to Riyadh flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Louis to Riyadh airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

St. Louis to Riyadh Flights

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*Available to One Key members.