Cheap flights from Hilo to St. Louis from $695

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 10/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Hilo to St. Louis (ITO-STL)

Cheap round-trip flights

Alaska Airlines Logo
7:49 pm - 12:03 amITO-STL
23h 14m2 stops
Alaska Airlines Logo
3:57 pm - 10:19 pmSTL-ITO
35h 22m2 stops
$695Alaska Airlines
Find Deal
Wed, Oct 8 - Tue, Oct 14
Alaska Airlines Logo
9:00 pm - 11:59 pmITO-STL
21h 59m2 stops
Alaska Airlines Logo
6:00 am - 5:39 pmSTL-ITO
16h 39m2 stops
$987Alaska Airlines
Find Deal
Sun, Sep 14 - Thu, Sep 18
United Airlines Logo
6:00 am - 10:00 pmITO-STL
35h 00m3 stops
United Airlines Logo
5:35 pm - 8:06 amSTL-ITO
43h 31m2 stops
$4,811United Airlines
Find Deal
Wed, Oct 8 - Tue, Oct 14

Alaska Airlines flights from Hilo to St. Louis

Our best Alaska Airlines deals on Hilo to St. Louis flight tickets
Alaska Airlines
Oct 8
ITO7:49 pmHilo Intl
23h 14m
2 stops
STL12:03 amLambert-St Louis
Oct 14
STL3:57 pmLambert-St Louis
35h 22m
2 stops
ITO10:19 pmHilo Intl
Alaska Airlines
Sep 3
ITO5:26 pmHilo Intl
16h 13m
2 stops
STL2:39 pmLambert-St Louis
Sep 8
STL6:00 amLambert-St Louis
16h 39m
2 stops
ITO5:39 pmHilo Intl
Alaska Airlines
Sep 14
ITO9:00 pmHilo Intl
21h 59m
2 stops
STL11:59 pmLambert-St Louis
Sep 18
STL6:00 amLambert-St Louis
16h 39m
2 stops
ITO5:39 pmHilo Intl

United Airlines flights from Hilo to St. Louis

Our best United Airlines deals on Hilo to St. Louis flight tickets
United Airlines
Sep 3
ITO8:36 amHilo Intl
28h 47m
3 stops
STL6:23 pmLambert-St Louis
Sep 8
STL9:00 amLambert-St Louis
13h 39m
2 stops
ITO5:39 pmHilo Intl
United Airlines
Oct 8
ITO6:00 amHilo Intl
35h 00m
3 stops
STL10:00 pmLambert-St Louis
Oct 14
STL5:35 pmLambert-St Louis
43h 31m
2 stops
ITO8:06 amHilo Intl

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 September 1, 2025.
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

HiloSt. Louis

ITO - STL

ITOSTL

Hilo Intl

Wed 10/8

7:49 pm-12:03 am

2 stops23h 14m

Lambert-St Louis

Tue 10/14

3:57 pm-10:19 pm

2 stops35h 22m

$695

HiloSt. Louis

ITO - STL

ITOSTL

Hilo Intl

Sun 9/14

9:00 pm-11:59 pm

2 stops21h 59m

Lambert-St Louis

Thu 9/18

6:00 am-5:39 pm

2 stops16h 39m

$987

HiloSt. Louis

ITO - STL

ITOSTL

Hilo Intl

Wed 10/8

6:00 am-10:00 pm

3 stops35h 00m

Lambert-St Louis

Tue 10/14

5:35 pm-8:06 am

2 stops43h 31m

$4,811

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to St. Louis from

How to get the cheapest flight ticket from Hilo to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Monday when prices can be found for as low as $1,021. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $1,325. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Hilo in the morning is the least expensive time of day to depart. momondo users have found prices as low as $1,021 when looking at flights departing in the morning. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $1,337 per ticket.

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

Direct flights

None
There are no direct flights from Hilo to St. Louis. There are no popular flight routes 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 21h 59m.

  • 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.

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
Florissant
Maryland Heights
O'Fallon
Fenton
Collinsville
Wentzville
Alton
St. Peters
Farmington
Festus
Glencoe
Clayton
Edwardsville
Eureka
Litchfield
Shrewsbury

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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1 adult
Sat 9/6
Sat 9/13

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