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Cheap flights from Hilo to St. Louis from $720

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Hilo to St. Louis departing on 9/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Hilo to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:44 pm - 2:16 pm
ITO
-
STL
13h 32m
2 stops
Multiple Airlines Logo
6:00 am - 5:26 pm
STL
-
ITO
16h 26m
2 stops
$720Multiple Airlines
Tue, Sep 22 - Thu, Sep 24
Multiple Airlines Logo
6:44 pm - 3:50 pm
ITO
-
STL
16h 06m
2 stops
Multiple Airlines Logo
7:00 am - 5:39 pm
STL
-
ITO
15h 39m
2 stops
$779Multiple Airlines
Fri, May 1 - Tue, May 5
United Airlines Logo
10:56 am - 5:47 am
ITO
-
STL
13h 51m
2 stops
United Airlines Logo
7:45 am - 7:08 am
STL
-
ITO
28h 23m
3 stops
$907United Airlines
Fri, May 1 - Tue, May 5
United Airlines Logo
6:00 am - 5:47 am
ITO
-
STL
18h 47m
2 stops
United Airlines Logo
7:45 am - 9:33 pm
STL
-
ITO
18h 48m
3 stops
$912United Airlines
Fri, May 1 - Tue, May 5

United Airlines flights from Hilo to St. Louis

Our best United Airlines deals on Hilo to St. Louis flight tickets
United Airlines
May 1
ITO10:56 amHilo Intl
13h 51m
2 stops
STL5:47 amLambert-St Louis
May 5
STL7:45 amLambert-St Louis
28h 23m
3 stops
ITO7:08 amHilo Intl
$907
United Airlines
May 1
ITO6:00 amHilo Intl
18h 47m
2 stops
STL5:47 amLambert-St Louis
May 5
STL7:45 amLambert-St Louis
18h 48m
3 stops
ITO9:33 pmHilo Intl
$912

momondo Fare Finder

 
Customize your flight search to find flights from Hilo to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated April 6, 2026.
Use the filters below to find and compare flights from Hilo to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

HiloSt. Louis

ITO - STL

ITOSTL

Hilo Intl

Tue 9/22

7:44 pm-2:16 pm

2 stops13h 32m

Lambert-St Louis

Thu 9/24

6:00 am-5:26 pm

2 stops16h 26m

$720

HiloSt. Louis

ITO - STL

ITOSTL

Hilo Intl

Fri 5/1

6:44 pm-3:50 pm

2 stops16h 06m

Lambert-St Louis

Tue 5/5

7:00 am-5:39 pm

2 stops15h 39m

$779

HiloSt. Louis

ITO - STL

ITOSTL

Hilo Intl

Fri 5/1

10:56 am-5:47 am

2 stops13h 51m

Lambert-St Louis

Tue 5/5

7:45 am-7:08 am

3 stops28h 23m

$907

HiloSt. Louis

ITO - STL

ITOSTL

Hilo Intl

Fri 5/1

6:00 am-5:47 am

2 stops18h 47m

Lambert-St Louis

Tue 5/5

7:45 am-9:33 pm

3 stops18h 48m

$912

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from Hilo to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Hilo to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Hilo to St. Louis (ITO to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Hilo to St. Louis

Fastest flight time

13h 32m

Direct flights

None
The fastest flight from Hilo to St. Louis takes 13h 32m
There are no direct flights from Hilo to St. Louis. There are no popular flight routes from Hilo to St. Louis.
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Frequently asked questions about flying from Hilo to St. Louis

  • How far is Hilo Intl to Lambert-St Louis by plane?

    The distance between Hilo Intl and Lambert-St Louis is about 4037.9 mi. In terms of flight time, this usually takes a little over 13h 32m.

  • When did momondo last update prices for flights from Hilo Intl Airport to Lambert-St Louis Airport?

    Prices for flights from Hilo Intl Airport to Lambert-St Louis Airport refresh daily.

  • How old do you have to be to fly from Hilo Intl Airport to Lambert-St Louis Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Hilo Intl Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Frequently asked questions about flying from Hilo to St. Louis

  • How do I get Price Alerts for flights from Hilo to St. Louis?

    Price Alerts will notify you by email when the price for flights to St. Louis from Hilo decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

  • How can I save money on flights from Hilo to St. Louis with momondo?

    With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

  • How does momondo find its flight prices?

    We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Maryland Heights
O'Fallon
Florissant
St. Peters
Collinsville
Wentzville
Alton
Fenton
Farmington
Clayton
Festus
Eureka
Edwardsville
Litchfield
Shrewsbury
Grafton

Why use momondo?

Why should I use momondo to find a flight deal from Hilo to St. Louis?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Hilo to St. Louis. momondo saves you time and could save you money on your trip.

Can I find flights from Hilo to St. Louis with flexible booking policies on momondo?

Flights from Hilo to St. Louis with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Hilo to St. Louis?

Once all potential Hilo to St. Louis flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Hilo to St. Louis right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to St. Louis from Hilo. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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