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Cheap flights from St. Louis to Riyadh from $523

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 Riyadh departing on 12/31. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
4:32 pm - 3:35 am
STL
-
RUH
27h 03m2 stops
American Airlines Logo
5:00 am - 11:52 pm
RUH
-
STL
26h 52m2 stops
$676American Airlines
Wed, Mar 11 - Tue, Mar 31
Lufthansa Logo
3:50 pm - 7:55 pm
STL
-
RUH
19h 05m1 stop
Lufthansa Logo
6:25 am - 10:58 pm
RUH
-
STL
25h 33m2 stops
$723Lufthansa
Wed, Jan 21 - Wed, Jan 28
Lufthansa Logo
3:50 pm - 7:55 pm
STL
-
RUH
19h 05m1 stop
Lufthansa Logo
6:25 am - 10:58 pm
RUH
-
STL
25h 33m2 stops
$737Lufthansa
Wed, Jan 21 - Wed, Jan 28
Lufthansa Logo
3:50 pm - 7:55 pm
STL
-
RUH
19h 05m1 stop
Lufthansa Logo
2:00 am - 1:55 pm
RUH
-
STL
20h 55m1 stop
$742Lufthansa
Wed, Jan 21 - Tue, Jan 27
Lufthansa Logo
11:22 am - 7:55 pm
STL
-
RUH
23h 33m2 stops
Lufthansa Logo
6:25 am - 10:58 pm
RUH
-
STL
25h 33m2 stops
$756Lufthansa
Wed, Jan 21 - Wed, Jan 28
Lufthansa Logo
12:44 pm - 10:25 pm
STL
-
RUH
24h 41m2 stops
Lufthansa Logo
2:00 am - 1:55 pm
RUH
-
STL
20h 55m1 stop
$758Lufthansa
Tue, Jan 20 - Tue, Jan 27
Lufthansa Logo
12:44 pm - 10:25 pm
STL
-
RUH
24h 41m2 stops
Lufthansa Logo
6:25 am - 5:43 pm
RUH
-
STL
20h 18m2 stops
$763Lufthansa
Tue, Jan 20 - Fri, Jan 30
Lufthansa Logo
1:15 pm - 7:55 pm
STL
-
RUH
21h 40m2 stops
Lufthansa Logo
2:00 am - 5:43 pm
RUH
-
STL
24h 43m2 stops
$766Lufthansa
Tue, Jan 20 - Wed, Jan 28
Lufthansa Logo
3:50 pm - 7:55 pm
STL
-
RUH
19h 05m1 stop
Lufthansa Logo
2:00 am - 5:43 pm
RUH
-
STL
24h 43m2 stops
$767Lufthansa
Wed, Jan 21 - Wed, Jan 28
Multiple Airlines Logo
9:59 am - 7:35 pm
STL
-
RUH
24h 36m2 stops
Multiple Airlines Logo
11:55 pm - 4:37 pm
RUH
-
STL
25h 42m3 stops
$770Multiple Airlines
Tue, Jan 20 - Tue, Jan 27

KLM flights from St. Louis to Riyadh

Our best KLM deals on St. Louis to Riyadh flight tickets
KLM
Jan 21
STL1:00 pmLambert-St Louis
24h 50m
2 stops
RUH10:50 pmRiyadh King Khaled Intl
Jan 29
RUH11:55 pmRiyadh King Khaled Intl
25h 42m
3 stops
STL4:37 pmLambert-St Louis
$771
Find similar
KLM
Jan 22
STL3:31 pmLambert-St Louis
22h 19m
2 stops
RUH10:50 pmRiyadh King Khaled Intl
Jan 29
RUH11:55 pmRiyadh King Khaled Intl
25h 42m
3 stops
STL4:37 pmLambert-St Louis
$810
Find similar
KLM
Mar 1
STL3:47 pmLambert-St Louis
22h 03m
2 stops
RUH10:50 pmRiyadh King Khaled Intl
Mar 31
RUH11:55 pmRiyadh King Khaled Intl
24h 47m
3 stops
STL4:42 pmLambert-St Louis
$819
Find similar

Lufthansa flights from St. Louis to Riyadh

Our best Lufthansa deals on St. Louis to Riyadh flight tickets
Lufthansa
Jan 21
STL3:50 pmLambert-St Louis
19h 05m
1 stop
RUH7:55 pmRiyadh King Khaled Intl
Jan 28
RUH6:25 amRiyadh King Khaled Intl
25h 33m
2 stops
STL10:58 pmLambert-St Louis
$723
Find similar
Lufthansa
Jan 21
STL3:50 pmLambert-St Louis
19h 05m
1 stop
RUH7:55 pmRiyadh King Khaled Intl
Jan 28
RUH6:25 amRiyadh King Khaled Intl
25h 33m
2 stops
STL10:58 pmLambert-St Louis
$737
Find similar
Lufthansa
Jan 21
STL3:50 pmLambert-St Louis
19h 05m
1 stop
RUH7:55 pmRiyadh King Khaled Intl
Jan 27
RUH2:00 amRiyadh King Khaled Intl
20h 55m
1 stop
STL1:55 pmLambert-St Louis
$742
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Riyadh 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, momondo users made 832,500 searches. Data last updated December 9, 2025.
Use the filters below to find and compare flights from St. Louis to Riyadh that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisRiyadh

STL - RUH

STLRUH

Lambert-St Louis

Wed 3/11

4:32 pm-3:35 am

2 stops27h 03m

Riyadh King Khaled Intl

Tue 3/31

5:00 am-11:52 pm

2 stops26h 52m

$676

St. LouisRiyadh

STL - RUH

STLRUH

Lambert-St Louis

Wed 1/21

3:50 pm-7:55 pm

1 stop19h 05m

Riyadh King Khaled Intl

Wed 1/28

6:25 am-10:58 pm

2 stops25h 33m

$723

St. LouisRiyadh

STL - RUH

STLRUH

Lambert-St Louis

Wed 1/21

3:50 pm-7:55 pm

1 stop19h 05m

Riyadh King Khaled Intl

Wed 1/28

6:25 am-10:58 pm

2 stops25h 33m

$737

St. LouisRiyadh

STL - RUH

STLRUH

Lambert-St Louis

Wed 1/21

3:50 pm-7:55 pm

1 stop19h 05m

Riyadh King Khaled Intl

Tue 1/27

2:00 am-1:55 pm

1 stop20h 55m

$742

St. LouisRiyadh

STL - RUH

STLRUH

Lambert-St Louis

Wed 1/21

11:22 am-7:55 pm

2 stops23h 33m

Riyadh King Khaled Intl

Wed 1/28

6:25 am-10:58 pm

2 stops25h 33m

$756

St. LouisRiyadh

STL - RUH

STLRUH

Lambert-St Louis

Tue 1/20

12:44 pm-10:25 pm

2 stops24h 41m

Riyadh King Khaled Intl

Tue 1/27

2:00 am-1:55 pm

1 stop20h 55m

$758

St. LouisRiyadh

STL - RUH

STLRUH

Lambert-St Louis

Tue 1/20

12:44 pm-10:25 pm

2 stops24h 41m

Riyadh King Khaled Intl

Fri 1/30

6:25 am-5:43 pm

2 stops20h 18m

$763

St. LouisRiyadh

STL - RUH

STLRUH

Lambert-St Louis

Tue 1/20

1:15 pm-7:55 pm

2 stops21h 40m

Riyadh King Khaled Intl

Wed 1/28

2:00 am-5:43 pm

2 stops24h 43m

$766

St. LouisRiyadh

STL - RUH

STLRUH

Lambert-St Louis

Wed 1/21

3:50 pm-7:55 pm

1 stop19h 05m

Riyadh King Khaled Intl

Wed 1/28

2:00 am-5:43 pm

2 stops24h 43m

$767

St. LouisRiyadh

STL - RUH

STLRUH

Lambert-St Louis

Tue 1/20

9:59 am-7:35 pm

2 stops24h 36m

Riyadh King Khaled Intl

Tue 1/27

11:55 pm-4:37 pm

3 stops25h 42m

$770

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to Riyadh from

How to get the cheapest flight ticket from St. Louis to Riyadh

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 time of day to depart on your flight to Riyadh?

Our data shows that the cheapest St. Louis to Riyadh flights are usually those with departure times in the afternoon. Our users have found flights to Riyadh in the afternoon for as low as $1,155. Flights in the morning are often more expensive with an average ticket price of $1,269.

When to book flights from St. Louis to Riyadh

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Riyadh according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Riyadh (STL to RUH) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Riyadh

Fastest flight time

23h 33m

Direct flights

None
The fastest flight from St. Louis to Riyadh takes 23h 33m
There are no direct flights from St. Louis to Riyadh. There are no popular flight routes from St. Louis to Riyadh.
Search flight deals

  • How far is Lambert-St Louis to Riyadh King Khaled Intl by plane?

    Lambert-St Louis and Riyadh King Khaled Intl are 7245.2 mi apart from one another. In terms of flight time, this usually takes a little over 18h 50m.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Riyadh King Khaled Intl Airport?

    Prices for flights from Lambert-St Louis Airport to Riyadh King Khaled Intl Airport were last updated today.

  • How old do you have to be to fly from Lambert-St Louis Airport to Riyadh King Khaled Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Riyadh King Khaled Intl Airport.

  • What documentation or ID do you need to fly to Riyadh King Khaled Intl Airport?

    The necessary travel and health documents for your Riyadh King Khaled Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Riyadh?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to Riyadh. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from St. Louis to Riyadh with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for St. Louis to Riyadh flights to just show those with flexible booking policies.

How can momondo help me find flights from St. Louis to Riyadh?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to Riyadh.

I’m not ready to book a flight from St. Louis to Riyadh right now. Can momondo alert me if prices change?

Yes. momondo can track prices for St. Louis to Riyadh flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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