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Waterloo

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Waterloo Flights as Low as $46

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Frontier Airlines
Mon, Sep 28 - Mon, Oct 12
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$46 Roundtrip, found 17 hours ago
$46
Roundtrip
found 17 hours ago
Select Frontier Airlines flight, departing Mon, Sep 28 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Mon, Oct 12, priced at $46 found 17 hours ago
Frontier Airlines
Sun, Sep 6 - Mon, Sep 21
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$51 Roundtrip, found 2 days ago
$51
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Sun, Sep 6 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Mon, Sep 21, priced at $51 found 2 days ago
Frontier Airlines
Fri, Sep 18 - Fri, Oct 2
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$56 Roundtrip, found 3 days ago
$56
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Fri, Sep 18 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Fri, Oct 2, priced at $56 found 3 days ago
Frontier Airlines
Mon, Sep 14 - Wed, Sep 30
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$61 Roundtrip, found 1 day ago
$61
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Mon, Sep 14 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Wed, Sep 30, priced at $61 found 1 day ago
Frontier Airlines
Sun, Aug 30 - Mon, Aug 31
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$78 Roundtrip, found 1 day ago
$78
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Sun, Aug 30 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Mon, Aug 31, priced at $78 found 1 day ago
Frontier Airlines
Mon, Sep 14 - Wed, Sep 30
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$83 Roundtrip, found 1 day ago
$83
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Mon, Sep 14 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Wed, Sep 30, priced at $83 found 1 day ago
Frontier Airlines
Wed, Oct 14 - Tue, Oct 20
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$98 Roundtrip, found 3 days ago
$98
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Wed, Oct 14 from Denver Intl. to Lambert-St. Louis Intl., returning Tue, Oct 20, priced at $98 found 3 days ago
Delta
Tue, Sep 15 - Tue, Sep 15
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$113 Roundtrip, found 9 hours ago
$113
Roundtrip
found 9 hours ago
Select Delta flight, departing Tue, Sep 15 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Tue, Sep 15, priced at $113 found 9 hours ago
Southwest Airlines
Tue, Sep 15 - Tue, Sep 15
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$119 Roundtrip, found 9 hours ago
$119
Roundtrip
found 9 hours ago
Select Southwest Airlines flight, departing Tue, Sep 15 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Tue, Sep 15, priced at $119 found 9 hours ago
American Airlines
Sun, Sep 6 - Mon, Sep 21
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$178 Roundtrip, found 2 days ago
$178
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sun, Sep 6 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Mon, Sep 21, priced at $178 found 2 days ago
United
Sat, Aug 29 - Sat, Aug 29
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$191 Roundtrip, found 1 day ago
$191
Roundtrip
found 1 day ago
Select United flight, departing Sat, Aug 29 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Sat, Aug 29, priced at $191 found 1 day ago
Southwest Airlines
Sun, Sep 6 - Fri, Sep 11
DAL
Love Field
STL
Lambert-St. Louis Intl.
$200 Roundtrip, found 6 days ago
$200
Roundtrip
found 6 days ago
Select Southwest Airlines flight, departing Sun, Sep 6 from Love Field to Lambert-St. Louis Intl., returning Fri, Sep 11, priced at $200 found 6 days ago
Bargain Flight
Thu, Aug 27 - Mon, Aug 31
BWI
Baltimore Washington Intl. Thurgood Marshall
STL
Lambert-St. Louis Intl.
$224 Roundtrip, found 1 day ago
$224
Roundtrip
found 1 day ago
Select Bargain Flight flight, departing Thu, Aug 27 from Baltimore Washington Intl. Thurgood Marshall to Lambert-St. Louis Intl., returning Mon, Aug 31, priced at $224 found 1 day ago
Frontier Airlines
Sat, Oct 31 - Sat, Nov 7
EWR
Newark Liberty Intl. Airport
STL
Lambert-St. Louis Intl.
$228 Roundtrip, found 19 hours ago
$228
Roundtrip
found 19 hours ago
Select Frontier Airlines flight, departing Sat, Oct 31 from Newark Liberty Intl. Airport to Lambert-St. Louis Intl., returning Sat, Nov 7, priced at $228 found 19 hours ago
Delta
Mon, Oct 12 - Wed, Oct 14
ABE
Lehigh Valley Intl.
STL
Lambert-St. Louis Intl.
$318 Roundtrip, found 1 day ago
$318
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, Oct 12 from Lehigh Valley Intl. to Lambert-St. Louis Intl., returning Wed, Oct 14, priced at $318 found 1 day ago
Delta
Sun, Aug 9 - Thu, Aug 27
CMH
John Glenn Columbus Intl.
STL
Lambert-St. Louis Intl.
$358 Roundtrip, found 14 hours ago
$358
Roundtrip
found 14 hours ago
Select Delta flight, departing Sun, Aug 9 from John Glenn Columbus Intl. to Lambert-St. Louis Intl., returning Thu, Aug 27, priced at $358 found 14 hours ago

Cheap Flights to Waterloo

Fall in love at first flight with your vacation to Waterloo by saving a ton of cash on your last-minute cheap flight. There’s no more scouring the internet for a good deal—book your flight to Waterloo on Hotwire, and you’ll be up, up, and on a getaway in no time.

Because once the wheels are down in Waterloo, the good times start rolling. So buckle up, you’re in for a fun ride.

Frequently Asked Questions About flights to Waterloo

Don’t waste your time on endless searches for cheap airline tickets oneway or roundtrip. We’ll have you on your way to Waterloo with a tiny bag of pretzels in your hand before you can say “tray tables in the upright position”—and for a ticket price that works for your vacay budget.

So all you have to worry about is where you’re headed after the STL airport.

What is the cheapest month to fly to Waterloo?

Airline ticket prices fluctuate all the time, depending on the day of the week or the month of the year. The cheapest round trip flights to Waterloo are in September, but when you book your flight on Hotwire, savings are always in season.

How many airlines fly to Waterloo?

Variety is the spice of life, even when it comes to booking your next trip. Want options for airlines? You’ll find 15 to choose from for your flight to Waterloo.

What airport is best to fly into Waterloo?

When you’re planning your trip to Waterloo, convenience is the name of the game. Luckily, Waterloo MidAmerica-St. Louis Airport is nearby so you can deplane and get going on checking off everything on your Waterloo must-do list.

How much are flights to Waterloo?

Got very cheap flights on your vacation itinerary? When you book your airline tickets to Waterloo on Hotwire, you may just get what’s on your getaway wish list. With tickets as low as $46, you’ll have leftover cash for at least a magazine and a bottle of water at the airport book store.

How to get cheap flights to Waterloo?

The trick to saving a stack of cash on your flight to Waterloo? Snatch up that Hotwire flight deal when you see a killer rate because it could be gone in a flash. And with flights as low as $46 right now, why wait?

Waterloo Flight Information
Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Roundtrip price
$46

Last Minute Hotel Deals in Waterloo

Hyatt Regency St. Louis at The Arch

Hyatt Regency St. Louis at The Arch

4 out of 5
315 Chestnut St St. Louis MO
Book a stay at this business-friendly hotel in St. Louis. Enjoy free WiFi, 3 restaurants, and 2 bars/lounges. Our guests praise the helpful staff and the clean ...
8.6/10 Excellent! (4,188 reviews)
"Excellent location. Right across the street from the Arch. A quick walk to the ball field and a lot of nice places to eat. In for a longer walk??? The original Union station is a site to see. Everyone was very nice. Our room had an amazing view of the Arch and surroundings. Recommend the avocado ..."

Reviewed on Aug 7, 2026

Get rates
Hyatt Regency St. Louis at The Arch
Pear Tree Inn St. Louis Near Union Station

Pear Tree Inn St. Louis Near Union Station

3 out of 5
2211 Market Street St. Louis MO
Book a stay at this business-friendly hotel in St. Louis. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the breakfast and the restaurant ...
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Pear Tree Inn St. Louis Near Union Station
Drury Plaza Hotel St. Louis at the Arch

Drury Plaza Hotel St. Louis at the Arch

3 out of 5
2 South 4th Street St. Louis MO
Book a stay at this business-friendly hotel in St. Louis. Enjoy free breakfast, free WiFi, and 2 hot tubs. Our guests praise the breakfast and the pool in our ...
9.6/10 Exceptional! (3,640 reviews)
"Although a bit dated it was great for what it was and especially where it was. Perfect location for Downtown STL."

Reviewed on Aug 7, 2026

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Drury Plaza Hotel St. Louis at the Arch
Live by Loews - St.Louis

Live by Loews - St.Louis

4 out of 5
799 Clark ave St. Louis MO
Book a stay at this business-friendly hotel in St. Louis. Enjoy free WiFi, a rooftop terrace, and breakfast (surcharge). Our guests praise the bar and the helpful ...
9.4/10 Exceptional! (1,285 reviews)
"The property and room were VERY clean. The staff was kind. Easy peasy - great stay."

Reviewed on Aug 6, 2026

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Live by Loews - St.Louis
Forest Park Hotel by MDR

Forest Park Hotel by MDR

3 out of 5
5915 Wilson Ave St. Louis MO
Book a stay at this business-friendly hotel in St. Louis. Enjoy free WiFi, free parking, and an outdoor pool. Our guests praise the helpful staff and the clean ...
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Forest Park Hotel by MDR
Drury Plaza Hotel St. Louis Union Station

Drury Plaza Hotel St. Louis Union Station

3 out of 5
201 S 20th St St. Louis MO
Book a stay at this business-friendly hotel in St. Louis. Enjoy free breakfast, free WiFi, and a fitness center. Our guests praise the breakfast and the helpful ...
9.4/10 Exceptional! (1,502 reviews)
"na"

Reviewed on Aug 7, 2026

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Drury Plaza Hotel St. Louis Union Station
Angad Arts Hotel St. Louis, Tapestry Collection by Hilton

Angad Arts Hotel St. Louis, Tapestry Collection by Hilton

4 out of 5
3550 Samuel Sheppard Drive St. Louis MO
Book a stay at this business-friendly hotel in St. Louis. Enjoy free WiFi, a rooftop terrace, and breakfast (surcharge). Our guests praise the helpful staff ...
9/10 Wonderful! (1,108 reviews)
"This was one of the coolest hotels I have stayed in and I would definitely stay here again. Centrally located and convenient to everything."

Reviewed on Aug 6, 2026

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Angad Arts Hotel St. Louis, Tapestry Collection by Hilton
River City Casino & Hotel

River City Casino & Hotel

4 out of 5
777 River City Casino Blvd St. Louis MO
Book a stay at this business-friendly hotel in St. Louis. Enjoy free parking, 5 restaurants, and a casino. Our guests praise the helpful staff and the clean ...
9.2/10 Wonderful! (1,719 reviews)
"We had a very nice stay. It was quiet, clean and very easy to get around the casino. The staff was also extremely helpful. We would stay here again anytime."

Reviewed on Aug 5, 2026

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River City Casino & Hotel
See all 1,274 properties in Waterloo
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.