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Waterloo

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Waterloo Flights as Low as $120

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

Frontier Airlines
Thu, Sep 18 - Mon, Sep 22
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$120 Roundtrip, found 2 days ago
$120
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Thu, Sep 18 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Mon, Sep 22, priced at $120 found 2 days ago
Frontier Airlines
Thu, Aug 21 - Thu, Aug 28
DFW
Dallas-Fort Worth Intl.
STL
Lambert-St. Louis Intl.
$128 Roundtrip, found 14 hours ago
$128
Roundtrip
found 14 hours ago
Select Frontier Airlines flight, departing Thu, Aug 21 from Dallas-Fort Worth Intl. to Lambert-St. Louis Intl., returning Thu, Aug 28, priced at $128 found 14 hours ago
Delta
Thu, Sep 18 - Mon, Sep 22
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$150 Roundtrip, found 2 days ago
$150
Roundtrip
found 2 days ago
Select Delta flight, departing Thu, Sep 18 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Mon, Sep 22, priced at $150 found 2 days ago
Delta
Sat, Sep 27 - Sat, Sep 27
SEA
Seattle - Tacoma Intl.
STL
Lambert-St. Louis Intl.
$174 Roundtrip, found 3 days ago
$174
Roundtrip
found 3 days ago
Select Delta flight, departing Sat, Sep 27 from Seattle - Tacoma Intl. to Lambert-St. Louis Intl., returning Sat, Sep 27, priced at $174 found 3 days ago
United
Tue, Aug 26 - Sat, Aug 30
SFO
San Francisco Intl.
STL
Lambert-St. Louis Intl.
$176 Roundtrip, found 6 days ago
$176
Roundtrip
found 6 days ago
Select United flight, departing Tue, Aug 26 from San Francisco Intl. to Lambert-St. Louis Intl., returning Sat, Aug 30, priced at $176 found 6 days ago
Spirit Airlines
Mon, Aug 25 - Sun, Aug 31
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$176 Roundtrip, found 3 days ago
$176
Roundtrip
found 3 days ago
Select Spirit Airlines flight, departing Mon, Aug 25 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Sun, Aug 31, priced at $176 found 3 days ago
American Airlines
Wed, Oct 15 - Sat, Oct 18
SEA
Seattle - Tacoma Intl.
STL
Lambert-St. Louis Intl.
$177 Roundtrip, found 3 days ago
$177
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Oct 15 from Seattle - Tacoma Intl. to Lambert-St. Louis Intl., returning Sat, Oct 18, priced at $177 found 3 days ago
United
Tue, Nov 18 - Mon, Nov 24
SAT
San Antonio Intl.
STL
Lambert-St. Louis Intl.
$188 Roundtrip, found 19 hours ago
$188
Roundtrip
found 19 hours ago
Select United flight, departing Tue, Nov 18 from San Antonio Intl. to Lambert-St. Louis Intl., returning Mon, Nov 24, priced at $188 found 19 hours ago
American Airlines
Tue, Sep 9 - Sat, Sep 13
CLT
Charlotte-Douglas Intl.
STL
Lambert-St. Louis Intl.
$193 Roundtrip, found 12 hours ago
$193
Roundtrip
found 12 hours ago
Select American Airlines flight, departing Tue, Sep 9 from Charlotte-Douglas Intl. to Lambert-St. Louis Intl., returning Sat, Sep 13, priced at $193 found 12 hours ago
Delta
Tue, Oct 14 - Tue, Oct 21
DAL
Love Field
STL
Lambert-St. Louis Intl.
$197 Roundtrip, found 4 days ago
$197
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Oct 14 from Love Field to Lambert-St. Louis Intl., returning Tue, Oct 21, priced at $197 found 4 days ago
Hawaiian Airlines
Tue, Sep 30 - Wed, Oct 1
SFO
San Francisco Intl.
STL
Lambert-St. Louis Intl.
$206 Roundtrip, found 2 days ago
$206
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Tue, Sep 30 from San Francisco Intl. to Lambert-St. Louis Intl., returning Wed, Oct 1, priced at $206 found 2 days ago
Bargain Flight
Wed, Aug 20 - Sat, Aug 23
CLE
Hopkins Intl.
STL
Lambert-St. Louis Intl.
$210 Roundtrip, found 6 days ago
$210
Roundtrip
found 6 days ago
Select Bargain Flight flight, departing Wed, Aug 20 from Hopkins Intl. to Lambert-St. Louis Intl., returning Sat, Aug 23, priced at $210 found 6 days ago
Bargain Flight
Thu, Aug 28 - Tue, Sep 2
AUS
Austin-Bergstrom Intl.
STL
Lambert-St. Louis Intl.
$217 Roundtrip, found 1 day ago
$217
Roundtrip
found 1 day ago
Select Bargain Flight flight, departing Thu, Aug 28 from Austin-Bergstrom Intl. to Lambert-St. Louis Intl., returning Tue, Sep 2, priced at $217 found 1 day ago
Alaska Airlines
Tue, Sep 30 - Thu, Oct 2
SFO
San Francisco Intl.
STL
Lambert-St. Louis Intl.
$218 Roundtrip, found 2 days ago
$218
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Tue, Sep 30 from San Francisco Intl. to Lambert-St. Louis Intl., returning Thu, Oct 2, priced at $218 found 2 days ago
Frontier Airlines
Mon, Aug 25 - Thu, Sep 4
EWR
Newark Liberty Intl. Airport
STL
Lambert-St. Louis Intl.
$222 Roundtrip, found 4 hours ago
$222
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Mon, Aug 25 from Newark Liberty Intl. Airport to Lambert-St. Louis Intl., returning Thu, Sep 4, priced at $222 found 4 hours ago
Bargain Flight
Sun, Aug 31 - Sat, Sep 6
PAE
Seattle Paine Field Intl. Airport
STL
Lambert-St. Louis Intl.
$676 Roundtrip, found 2 days ago
$676
Roundtrip
found 2 days ago
Select Bargain Flight flight, departing Sun, Aug 31 from Seattle Paine Field Intl. Airport to Lambert-St. Louis Intl., returning Sat, Sep 6, priced at $676 found 2 days 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 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 $120, 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 $120 right now, why wait?

Waterloo Flight Information
Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Roundtrip price
$119

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
Stay at this 4-star business-friendly hotel in St. Louis. Enjoy free WiFi, 3 restaurants, and 2 bars/lounges. Our guests praise the helpful staff and the clean ...
8.4/10 Very Good! (3,961 reviews)
"Always love the Hyatt!"

Reviewed on Aug 11, 2025

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Hyatt Regency St. Louis at The Arch
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
Stay at this 3-star business-friendly hotel in St. Louis. Enjoy free breakfast, free WiFi, and a fitness center. Our guests praise the breakfast and the pool ...
9.4/10 Exceptional! (2,937 reviews)
10+
"Awesome stay! One of my favorite hotels I have ever stayed at. From the comfortable rooms all the way to the free drinks. I couldn't of asked for a better stay! The lady that checked us in was informative and kind. We will definitely choose this hotel again on our next visit to St. Louis."

Reviewed on Aug 12, 2025

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Drury Plaza Hotel St. Louis at the Arch
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
Stay at this 4-star business-friendly hotel in St. Louis. Enjoy free WiFi, breakfast (surcharge), and room service. Our guests praise the bar and the helpful ...
8.6/10 Excellent! (1,004 reviews)
"Comfortable rooms. Very friendly and helpful staff. Great dinner at restaurant."

Reviewed on Aug 9, 2025

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Magnolia Hotel St. Louis, a Tribute Portfolio Hotel
The Arch Convention Hotel

The Arch Convention Hotel

3.5 out of 5
811 N 9th Street, St. Louis, MO
Stay at this 3.5-star business-friendly hotel in St. Louis. Enjoy free WiFi, a 24-hour fitness center, and parking (surcharge). Our guests praise the helpful ...
6.8/10 (1,006 reviews)
"Very well cared for, both property and service! Made me feel like royalty!"

Reviewed on Aug 7, 2025

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The Arch Convention 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
Stay at this 3.5-star business-friendly hotel in Kirkwood. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the breakfast and the helpful ...
8.4/10 Very Good! (1,247 reviews)
"Restaurants being in walking distance so after being in the car for hours you don't have to load back up to go eat"

Reviewed on Aug 10, 2025

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Best Western St. Louis-Kirkwood Route 66
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
Stay at this 3-star 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! (1,546 reviews)
"Reggie was pleasant when he checked me in. Quincy was very nice to my little nephew and helpful as well. The bed was comfortable. The state of the room could be a touch better. The desk had something crusted onto it, which made me think it hadn’t been cleaned. Also, the plastic strip that’s on the ..."

Reviewed on Aug 8, 2025

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Pear Tree Inn St. Louis Near Union Station
Marriott St. Louis Grand

Marriott St. Louis Grand

4 out of 5
800 Washington Ave, St. Louis, MO
Stay at this 4-star business-friendly hotel in St. Louis. Enjoy breakfast (surcharge), 24-hour room service, and a 24-hour fitness center. Our guests praise ...
8/10 Very Good! (1,015 reviews)
"Very clean!"

Reviewed on Aug 11, 2025

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Marriott St. Louis Grand
21C Museum Hotel St Louis

21C Museum Hotel St Louis

4.5 out of 5
1528 Locust street, St. Louis, MO
Stay at this 4.5-star 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! (1,294 reviews)
"So different and classy"

Reviewed on Aug 9, 2025

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21C Museum Hotel St Louis
See all 1,101 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.