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Waterloo

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Waterloo Flights as Low as $68

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

Frontier Airlines
Sat, May 2 - Mon, May 11
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$68 Roundtrip, just found
$68
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, May 2 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Mon, May 11, priced at $68 just found
Frontier Airlines
Tue, May 26 - Wed, Jun 3
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$72 Roundtrip, found 6 hours ago
$72
Roundtrip
found 6 hours ago
Select Frontier Airlines flight, departing Tue, May 26 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Wed, Jun 3, priced at $72 found 6 hours ago
Frontier Airlines
Wed, Apr 29 - Sat, May 9
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$73 Roundtrip, found 6 hours ago
$73
Roundtrip
found 6 hours ago
Select Frontier Airlines flight, departing Wed, Apr 29 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Sat, May 9, priced at $73 found 6 hours ago
Frontier Airlines
Mon, Jun 1 - Mon, Jun 15
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$74 Roundtrip, found 11 hours ago
$74
Roundtrip
found 11 hours ago
Select Frontier Airlines flight, departing Mon, Jun 1 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Mon, Jun 15, priced at $74 found 11 hours ago
Frontier Airlines
Sat, May 30 - Wed, Jun 10
DFW
Dallas-Fort Worth Intl.
STL
Lambert-St. Louis Intl.
$84 Roundtrip, found 6 hours ago
$84
Roundtrip
found 6 hours ago
Select Frontier Airlines flight, departing Sat, May 30 from Dallas-Fort Worth Intl. to Lambert-St. Louis Intl., returning Wed, Jun 10, priced at $84 found 6 hours ago
Frontier Airlines
Sat, May 9 - Fri, May 15
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$105 Roundtrip, just found
$105
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, May 9 from Denver Intl. to Lambert-St. Louis Intl., returning Fri, May 15, priced at $105 just found
American Airlines
Tue, May 12 - Wed, May 13
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$119 Roundtrip, just found
$119
Roundtrip
just found
Select American Airlines flight, departing Tue, May 12 from O'Hare Intl. to Lambert-St. Louis Intl., returning Wed, May 13, priced at $119 just found
Frontier Airlines
Thu, Apr 30 - Mon, May 11
RDU
Raleigh - Durham Intl.
STL
Lambert-St. Louis Intl.
$142 Roundtrip, just found
$142
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Apr 30 from Raleigh - Durham Intl. to Lambert-St. Louis Intl., returning Mon, May 11, priced at $142 just found
Frontier Airlines
Tue, Apr 28 - Thu, May 14
PHL
Philadelphia Intl.
STL
Lambert-St. Louis Intl.
$142 Roundtrip, found 6 hours ago
$142
Roundtrip
found 6 hours ago
Select Frontier Airlines flight, departing Tue, Apr 28 from Philadelphia Intl. to Lambert-St. Louis Intl., returning Thu, May 14, priced at $142 found 6 hours ago
Frontier Airlines
Mon, Apr 27 - Wed, May 13
IAH
George Bush Intercontinental
STL
Lambert-St. Louis Intl.
$142 Roundtrip, just found
$142
Roundtrip
just found
Select Frontier Airlines flight, departing Mon, Apr 27 from George Bush Intercontinental to Lambert-St. Louis Intl., returning Wed, May 13, priced at $142 just found
Frontier Airlines
Tue, Apr 28 - Thu, May 14
TTN
Mercer
STL
Lambert-St. Louis Intl.
$142 Roundtrip, found 6 hours ago
$142
Roundtrip
found 6 hours ago
Select Frontier Airlines flight, departing Tue, Apr 28 from Mercer to Lambert-St. Louis Intl., returning Thu, May 14, priced at $142 found 6 hours ago
United
Tue, May 12 - Wed, May 13
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$152 Roundtrip, just found
$152
Roundtrip
just found
Select United flight, departing Tue, May 12 from O'Hare Intl. to Lambert-St. Louis Intl., returning Wed, May 13, priced at $152 just found
Delta
Tue, May 12 - Wed, May 13
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$159 Roundtrip, just found
$159
Roundtrip
just found
Select Delta flight, departing Tue, May 12 from O'Hare Intl. to Lambert-St. Louis Intl., returning Wed, May 13, priced at $159 just found
Frontier Airlines
Tue, Apr 21 - Thu, Apr 23
LGA
LaGuardia
STL
Lambert-St. Louis Intl.
$215 Roundtrip, just found
$215
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, Apr 21 from LaGuardia to Lambert-St. Louis Intl., returning Thu, Apr 23, priced at $215 just found
Delta
Sat, May 30 - Wed, Jun 10
DAL
Love Field
STL
Lambert-St. Louis Intl.
$241 Roundtrip, just found
$241
Roundtrip
just found
Select Delta flight, departing Sat, May 30 from Love Field to Lambert-St. Louis Intl., returning Wed, Jun 10, priced at $241 just found
Alaska Airlines
Sat, May 9 - Fri, May 15
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$531 Roundtrip, just found
$531
Roundtrip
just found
Select Alaska Airlines flight, departing Sat, May 9 from Denver Intl. to Lambert-St. Louis Intl., returning Fri, May 15, priced at $531 just found

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 May, 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 16 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 $68, 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 $68 right now, why wait?

Waterloo Flight Information
Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Roundtrip price
$68

Last Minute Hotel Deals in Waterloo

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! (1,931 reviews)
Yes

Reviewed on Apr 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 ...
9.4/10 Exceptional! (3,360 reviews)
Perfection in every way. Breakfast was amazing. The soda machine was a game changer!! Breakfast tables were always clean (cleaned in between families). From the moment I walked in, the staff was friendly, welcoming, and helpful. Our hotel room was clean. The pool and hot tub space was amazing. My ...

Reviewed on Apr 5, 2026

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Drury Plaza Hotel St. Louis at the Arch
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! (1,731 reviews)
We had a double queen room and one bed didn’t have a comforter. We checked in with 4 adults but only had 3 towels in the bathroom. On the second day we asked for a comforter for the second bed and extra towels and then never received them. Elevators are a pain in the behind also. We did love all ...

Reviewed on Apr 6, 2026

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21C Museum Hotel St Louis
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! (4,003 reviews)
The property was nice but dated. There were not enough outlets, sink faucet not attached, awful room spray, only 1 of 4 elevators working with a very busy hotel makes for 10+ minute waits. QR codes on the room menus did not work so it was difficult to order food or even know what was offered. Plenty ...

Reviewed on Apr 6, 2026

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Hyatt Regency St. Louis at The Arch
Drury Inn & Suites St. Louis Union Station

Drury Inn & Suites 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! (1,348 reviews)
Welcoming, very kind staff

Reviewed on Apr 5, 2026

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Drury Inn & Suites St. Louis Union Station
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 ...
9/10 Wonderful! (1,513 reviews)
Good time

Reviewed on Apr 6, 2026

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River City Casino & Hotel
Best Western St. Louis-Kirkwood Route 66

Best Western St. Louis-Kirkwood Route 66

3.5 out of 5
1200 S Kirkwood Road Kirkwood MO
Book a stay at this business-friendly hotel in Kirkwood. Enjoy free parking, an outdoor pool, and room service. Our guests praise the breakfast and the helpful ...
8.4/10 Very Good! (1,440 reviews)
If I could give this place zero stars I would. They sold us a room with no working A/C, knowing it doesn’t work. Said they were sold out of other rooms and we couldn’t change when we realized. Didn’t give us any compensation to make up for it except a box fan. Will never stay here or any Best Western ...

Reviewed on Apr 2, 2026

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Best Western St. Louis-Kirkwood Route 66
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! (1,145 reviews)
The staff is very friendly and accommodating. The only complaint was the downstairs bar. We attended after an event; the bar was full but there was plenty of seating in the area. Unfortunately, we never got waited on nor did several other guests that were sitting nearby. Besides the bar area everything ...

Reviewed on Apr 6, 2026

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Live by Loews - St.Louis
See all 1,181 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.