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Waterloo

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Waterloo Flights as Low as $66

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

Frontier Airlines
Wed, Aug 12 - Tue, Aug 25
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$66 Roundtrip, found 1 hour ago
$66
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Wed, Aug 12 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Tue, Aug 25, priced at $66 found 1 hour ago
Frontier Airlines
Tue, Jul 14 - Tue, Jul 14
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$68 Roundtrip, found 4 hours ago
$68
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Tue, Jul 14 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Tue, Jul 14, priced at $68 found 4 hours ago
Frontier Airlines
Mon, Jul 6 - Wed, Jul 22
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$77 Roundtrip, found 7 hours ago
$77
Roundtrip
found 7 hours ago
Select Frontier Airlines flight, departing Mon, Jul 6 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Wed, Jul 22, priced at $77 found 7 hours ago
Frontier Airlines
Tue, Jun 23 - Wed, Jul 1
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$79 Roundtrip, just found
$79
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, Jun 23 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Wed, Jul 1, priced at $79 just found
Frontier Airlines
Wed, Jun 24 - Wed, Jul 1
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$84 Roundtrip, found 4 hours ago
$84
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Wed, Jun 24 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Wed, Jul 1, priced at $84 found 4 hours ago
Delta
Tue, Jul 14 - Tue, Jul 14
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$124 Roundtrip, found 4 hours ago
$124
Roundtrip
found 4 hours ago
Select Delta flight, departing Tue, Jul 14 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Tue, Jul 14, priced at $124 found 4 hours ago
Bargain Flight
Tue, Jul 7 - Wed, Jul 15
BWI
Baltimore Washington Intl. Thurgood Marshall
STL
Lambert-St. Louis Intl.
$238 Roundtrip, found 4 hours ago
$238
Roundtrip
found 4 hours ago
Select Bargain Flight flight, departing Tue, Jul 7 from Baltimore Washington Intl. Thurgood Marshall to Lambert-St. Louis Intl., returning Wed, Jul 15, priced at $238 found 4 hours ago
Bargain Flight
Sat, Jun 20 - Sat, Jun 27
OMA
Eppley Field
STL
Lambert-St. Louis Intl.
$251 Roundtrip, found 4 hours ago
$251
Roundtrip
found 4 hours ago
Select Bargain Flight flight, departing Sat, Jun 20 from Eppley Field to Lambert-St. Louis Intl., returning Sat, Jun 27, priced at $251 found 4 hours ago
Frontier Airlines
Tue, Jul 7 - Wed, Jul 8
IAH
George Bush Intercontinental
STL
Lambert-St. Louis Intl.
$252 Roundtrip, found 17 hours ago
$252
Roundtrip
found 17 hours ago
Select Frontier Airlines flight, departing Tue, Jul 7 from George Bush Intercontinental to Lambert-St. Louis Intl., returning Wed, Jul 8, priced at $252 found 17 hours ago
Frontier Airlines
Fri, Jul 3 - Wed, Jul 15
EWR
Newark Liberty Intl. Airport
STL
Lambert-St. Louis Intl.
$256 Roundtrip, found 2 days ago
$256
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Fri, Jul 3 from Newark Liberty Intl. Airport to Lambert-St. Louis Intl., returning Wed, Jul 15, priced at $256 found 2 days ago
American Airlines
Wed, Aug 12 - Tue, Aug 25
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$257 Roundtrip, found 1 hour ago
$257
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Wed, Aug 12 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Tue, Aug 25, priced at $257 found 1 hour ago
Delta
Sat, Oct 17 - Tue, Oct 20
DAL
Love Field
STL
Lambert-St. Louis Intl.
$263 Roundtrip, found 4 hours ago
$263
Roundtrip
found 4 hours ago
Select Delta flight, departing Sat, Oct 17 from Love Field to Lambert-St. Louis Intl., returning Tue, Oct 20, priced at $263 found 4 hours ago
Bargain Flight
Tue, Jun 9 - Fri, Jun 19
DCA
Ronald Reagan Washington National
STL
Lambert-St. Louis Intl.
$272 Roundtrip, found 2 days ago
$272
Roundtrip
found 2 days ago
Select Bargain Flight flight, departing Tue, Jun 9 from Ronald Reagan Washington National to Lambert-St. Louis Intl., returning Fri, Jun 19, priced at $272 found 2 days ago
American Airlines
Tue, Jun 23 - Thu, Jul 2
BRO
Brownsville-South Padre Island Intl.
STL
Lambert-St. Louis Intl.
$362 Roundtrip, found 4 hours ago
$362
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Tue, Jun 23 from Brownsville-South Padre Island Intl. to Lambert-St. Louis Intl., returning Thu, Jul 2, priced at $362 found 4 hours ago
American Airlines
Tue, Sep 1 - Tue, Sep 15
AMA
Rick Husband Amarillo Intl.
STL
Lambert-St. Louis Intl.
$387 Roundtrip, found 4 hours ago
$387
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Tue, Sep 1 from Rick Husband Amarillo Intl. to Lambert-St. Louis Intl., returning Tue, Sep 15, priced at $387 found 4 hours ago
Frontier Airlines
Sun, Jun 14 - Sat, Jun 20
IAD
Washington Dulles Intl.
STL
Lambert-St. Louis Intl.
$408 Roundtrip, found 17 hours ago
$408
Roundtrip
found 17 hours ago
Select Frontier Airlines flight, departing Sun, Jun 14 from Washington Dulles Intl. to Lambert-St. Louis Intl., returning Sat, Jun 20, priced at $408 found 17 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 August, 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 13 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 Lambert-St. Louis Intl. 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 $66, 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 $66 right now, why wait?

Waterloo Flight Information
Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Roundtrip price
$66

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! (4,093 reviews)
"Valet Parking was horrible. We thought we made the right choice for only $10.00 more, to use valet. The day to leave was a chaotic experience. One worker to retrieve cars and it took one hour. So unorganized and understaffed for a Saturday. We felt like we were in Valet jail and would never see our ..."

Reviewed on Jun 6, 2026

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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 ...
8.8/10 Excellent! (2,003 reviews)
"It was ok"

Reviewed on Jun 6, 2026

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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! (3,481 reviews)
"Prime location next to the Arch, 3 blocks from Busch stadium. Parking ramp attached to hotel for easy in and out. Free breakfast and free food and drinks in the evening. Food was average. Staff was very nice and helpful"

Reviewed on Jun 6, 2026

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Drury Plaza Hotel St. Louis at the Arch
Hampton Inn St. Louis-Downtown (At the Gateway Arch)

Hampton Inn St. Louis-Downtown (At the Gateway Arch)

3.5 out of 5
333 Washington Ave St. Louis MO
Book a stay at this business-friendly hotel in St. Louis. Enjoy free breakfast, free WiFi, and a 24-hour fitness center. Our guests praise the breakfast and ...
8.8/10 Excellent! (1,294 reviews)
"I was blindsided by a $30 per day parking fee at check-in and elevators were hectic and the waits were long which I had trouble with as a wheelchair user but outside of that, my husband and I had a nice stay."

Reviewed on Jun 5, 2026

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Hampton Inn St. Louis-Downtown (At the Gateway 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! (1,210 reviews)
"Location and it was really beautiful for the price."

Reviewed on Jun 6, 2026

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Live by Loews - St.Louis
Hilton St. Louis at the Ballpark

Hilton St. Louis at the Ballpark

4 out of 5
1 S Broadway St. Louis MO
Book a stay at this business-friendly hotel in St. Louis. Enjoy 3 restaurants, 3 bars/lounges, and a rooftop terrace. Our guests praise the clean rooms in our ...
7.6/10 Good! (1,157 reviews)
"Staff was excellent and accommodating. Bistro food outstanding. Ideal location."

Reviewed on Jun 5, 2026

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Hilton St. Louis at the Ballpark
Magnolia Hotel St. Louis, a Tribute Portfolio Hotel

Magnolia Hotel St. Louis, a Tribute Portfolio Hotel

4 out of 5
421 N 8th St St. Louis MO
Book a stay at this business-friendly hotel in St. Louis. Enjoy free WiFi, breakfast (surcharge), and room service. Our guests praise the helpful staff and the ...
8.8/10 Excellent! (1,292 reviews)
"Great location, hotel and staff! Food and drinks at the restaurant were exceptional. Everyone was very responsive and friendly. I was pleasantly surprised that the hotel was maintained so well and the rooms were large."

Reviewed on Jun 5, 2026

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Magnolia Hotel St. Louis, a Tribute Portfolio Hotel
21C Museum Hotel St Louis

21C Museum Hotel St Louis

4.5 out of 5
1528 Locust street St. Louis MO
Book a stay at this luxury hotel in St. Louis. Enjoy free WiFi, breakfast (surcharge), and room service. Our guests praise the pool and the restaurant in our ...
9/10 Wonderful! (1,887 reviews)
"The room was clean and the bathroom was great! The shower was the absolute best!! The property was very nice, there was plenty to do in the hotel itself and was close by to other activities in St. Louis."

Reviewed on Jun 6, 2026

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21C Museum Hotel St Louis
See all 1,187 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.