$449 Cheap Flights from St. Louis (STL) to Yerevan (EVN)

View $449 flight on Sun, Nov 30, 2025Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Yerevan (EVN-Zvartnots Intl.)

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Cheap Flights from St. Louis to Yerevan (STL-EVN)

Prices were available within the past 7 days and start at $449 for one-way flights and $817 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Lufthansa
Sun, Nov 30 - Wed, Dec 17
STL
St. Louis
EVN
Yerevan
$817 Roundtrip, found 6 days ago
$817
Roundtrip
found 6 days ago
Select Lufthansa flight, departing Sun, Nov 30 from St. Louis to Yerevan, returning Wed, Dec 17, priced at $817 found 6 days ago
United
Wed, Dec 31 - Wed, Jan 14
STL
St. Louis
EVN
Yerevan
$818 Roundtrip, found 2 days ago
$818
Roundtrip
found 2 days ago
Select United flight, departing Wed, Dec 31 from St. Louis to Yerevan, returning Wed, Jan 14, priced at $818 found 2 days ago
United
Mon, Dec 1 - Wed, Dec 17
STL
St. Louis
EVN
Yerevan
$821 Roundtrip, found 6 days ago
$821
Roundtrip
found 6 days ago
Select United flight, departing Mon, Dec 1 from St. Louis to Yerevan, returning Wed, Dec 17, priced at $821 found 6 days ago
United
Mon, Nov 17 - Wed, Dec 3
STL
St. Louis
EVN
Yerevan
$823 Roundtrip, found 2 days ago
$823
Roundtrip
found 2 days ago
Select United flight, departing Mon, Nov 17 from St. Louis to Yerevan, returning Wed, Dec 3, priced at $823 found 2 days ago
Air Canada
Sun, Nov 30 - Wed, Dec 17
STL
St. Louis
EVN
Yerevan
$823 Roundtrip, found 6 days ago
$823
Roundtrip
found 6 days ago
Select Air Canada flight, departing Sun, Nov 30 from St. Louis to Yerevan, returning Wed, Dec 17, priced at $823 found 6 days ago
United
Wed, Dec 31 - Tue, Jan 13
STL
St. Louis
EVN
Yerevan
$825 Roundtrip, found 2 days ago
$825
Roundtrip
found 2 days ago
Select United flight, departing Wed, Dec 31 from St. Louis to Yerevan, returning Tue, Jan 13, priced at $825 found 2 days ago
United
Sun, Nov 23 - Thu, Dec 11
STL
St. Louis
EVN
Yerevan
$827 Roundtrip, found 2 days ago
$827
Roundtrip
found 2 days ago
Select United flight, departing Sun, Nov 23 from St. Louis to Yerevan, returning Thu, Dec 11, priced at $827 found 2 days ago
United
Mon, Dec 29 - Tue, Jan 13
STL
St. Louis
EVN
Yerevan
$828 Roundtrip, found 2 days ago
$828
Roundtrip
found 2 days ago
Select United flight, departing Mon, Dec 29 from St. Louis to Yerevan, returning Tue, Jan 13, priced at $828 found 2 days ago
Delta
Thu, Jan 1 - Wed, Jan 14
STL
St. Louis
EVN
Yerevan
$870 Roundtrip, found 2 days ago
$870
Roundtrip
found 2 days ago
Select Delta flight, departing Thu, Jan 1 from St. Louis to Yerevan, returning Wed, Jan 14, priced at $870 found 2 days ago
KLM
Sun, Nov 30 - Wed, Dec 17
STL
St. Louis
EVN
Yerevan
$929 Roundtrip, found 6 days ago
$929
Roundtrip
found 6 days ago
Select KLM flight, departing Sun, Nov 30 from St. Louis to Yerevan, returning Wed, Dec 17, priced at $929 found 6 days ago

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Zvartnots Intl. Airport (EVN) cost?
Secure a cheap one-way flight from $449 or cheap return flight from $817 from Lambert-St. Louis Intl. Airport (STL) to Zvartnots Intl. Airport (EVN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Zvartnots Intl. Airport (EVN)?
The cheapest month to fly from STL to EVN is November, when there's less demand. Off-peak months are usually when better flight deals are available between these airports.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Zvartnots Intl. Airport (EVN)?
Expedia's filter tool lets you easily compare different airlines, travel time and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest STL to EVN flight.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Zvartnots Intl. Airport (EVN)?
Direct flights from Lambert-St. Louis Intl. Airport (STL) to Zvartnots Intl. Airport (EVN) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from STL to EVN?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can vary depending on a range of factors, such as the time of year and carrier.*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 Zvartnots Intl. Airport (EVN)?
Select a flight from Lambert-St. Louis Intl. Airport (STL) to Zvartnots Intl. Airport (EVN) that takes off before 3 PM to reduce the likelihood of delays and cancellations. Later departures are on average 22% more likely to be canceled.**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 Zvartnots Intl. Airport (EVN) last-minute?
Last-minute fares from STL to EVN are usually more expensive. To lock in the best prices, start searching for flights as early as possible. That being said, if your travel plans are flexible, it's possible to land a cheap ticket right before your trip.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Zvartnots Intl. Airport (EVN)?
It's generally possible to cancel or reschedule your STL to EVN flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Zvartnots Intl.
Airlines serving
Austrian Airlines, Lufthansa, Qatar Airways
Roundtrip price
$816
Distance
6282 mi

Book with confidence

Book with confidence

St. Louis to Yerevan Flights

The cheapest times to fly from St. Louis to Yerevan

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 Yerevan are during the month of November. You can find some of the cheapest flights from St. Louis to Yerevan with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from St. Louis to Yerevan: 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 Yerevan

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 Yerevan in 2025. You can also book with separate airlines for your outbound and return journeys, from $449 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 Yerevan 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 Yerevan 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 Yerevan Flights
*Available to One Key members.