When did momondo last update prices for flights from Illinois to Petersburg Airport?

Prices for flights from Illinois to Petersburg Airport are updated daily.

How old do you have to be to fly from Illinois to Petersburg Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Petersburg Airport.

What documentation or ID do you need to fly to Petersburg Airport?

The required travel and health documents for your Petersburg Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Petersburg Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$358 Cheap Flights from Illinois to Petersburg in 2026

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Find the cheapest flights from Illinois to Petersburg

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 am - 10:45 am

ORD

PSG

31h 45m

3 stops

2:53 pm - 6:40 am

PSG

ORD

12h 47m

3 stops

$690Alaska Airlines

ons, apr 22 - lör, apr 25

8:48 pm - 10:45 am

ORD

PSG

40h 57m

3 stops

11:30 am - 6:40 am

PSG

ORD

16h 10m

2 stops

$694Alaska Airlines

ons, apr 22 - lör, apr 25

8:00 am - 10:45 am

ORD

PSG

29h 45m

3 stops

2:53 pm - 11:59 pm

PSG

ORD

30h 06m

3 stops

$697Alaska Airlines

ons, apr 22 - lör, apr 25

8:48 pm - 2:11 pm

ORD

PSG

20h 23m

2 stops

11:30 am - 6:40 am

PSG

ORD

16h 10m

2 stops

$698Alaska Airlines

ons, apr 22 - lör, apr 25

8:00 am - 10:45 am

ORD

PSG

29h 45m

3 stops

11:30 am - 6:40 am

PSG

ORD

16h 10m

2 stops

$702Alaska Airlines

ons, apr 22 - lör, apr 25

8:48 pm - 2:11 pm

ORD

PSG

20h 23m

2 stops

11:30 am - 6:40 am

PSG

ORD

16h 10m

2 stops

$707Alaska Airlines

ons, apr 22 - lör, apr 25

8:48 pm - 2:11 pm

ORD

PSG

20h 23m

2 stops

2:53 pm - 6:40 am

PSG

ORD

12h 47m

3 stops

$716Alaska Airlines

ons, apr 22 - lör, apr 25

8:48 pm - 2:11 pm

ORD

PSG

20h 23m

2 stops

2:53 pm - 6:40 am

PSG

ORD

36h 47m

3 stops

$722Alaska Airlines

ons, apr 22 - lör, apr 25

8:48 pm - 2:11 pm

ORD

PSG

20h 23m

2 stops

11:30 am - 6:40 am

PSG

ORD

16h 10m

2 stops

$726Alaska Airlines

ons, apr 22 - lör, apr 25

8:48 pm - 10:45 am

ORD

PSG

40h 57m

3 stops

2:53 pm - 6:40 am

PSG

ORD

12h 47m

3 stops

$730Alaska Airlines

ons, apr 22 - lör, apr 25

Alaska Airlines flights from Illinois to Petersburg, Alaska

Our best Alaska Airlines deals on Illinois to Petersburg, Alaska flight tickets

Alaska Airlines

Apr 22

ORD6:00 amChicago O'Hare Intl

31h 45m

3 stops

PSG10:45 amPetersburg

Apr 25

PSG2:53 pmPetersburg

12h 47m

3 stops

ORD6:40 amChicago O'Hare Intl

$690

Alaska Airlines

Apr 22

ORD8:48 pmChicago O'Hare Intl

40h 57m

3 stops

PSG10:45 amPetersburg

Apr 25

PSG11:30 amPetersburg

16h 10m

2 stops

ORD6:40 amChicago O'Hare Intl

$694

Alaska Airlines

Apr 22

ORD8:00 amChicago O'Hare Intl

29h 45m

3 stops

PSG10:45 amPetersburg

Apr 25

PSG2:53 pmPetersburg

30h 06m

3 stops

ORD11:59 pmChicago O'Hare Intl

$697

momondo Fare Finder

Use the filters below to find and compare flights from Illinois to Petersburg, Alaska that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoPetersburg

ORD - PSG

ORDPSG

Chicago O'Hare Intl

ons 4/22

6:00 am-10:45 am

3 stops31h 45m

Petersburg

lör 4/25

2:53 pm-6:40 am

3 stops12h 47m

$690

ChicagoPetersburg

ORD - PSG

ORDPSG

Chicago O'Hare Intl

ons 4/22

8:48 pm-10:45 am

3 stops40h 57m

Petersburg

lör 4/25

11:30 am-6:40 am

2 stops16h 10m

$694

ChicagoPetersburg

ORD - PSG

ORDPSG

Chicago O'Hare Intl

ons 4/22

8:00 am-10:45 am

3 stops29h 45m

Petersburg

lör 4/25

2:53 pm-11:59 pm

3 stops30h 06m

$697

ChicagoPetersburg

ORD - PSG

ORDPSG

Chicago O'Hare Intl

ons 4/22

8:48 pm-2:11 pm

2 stops20h 23m

Petersburg

lör 4/25

11:30 am-6:40 am

2 stops16h 10m

$698

ChicagoPetersburg

ORD - PSG

ORDPSG

Chicago O'Hare Intl

ons 4/22

8:00 am-10:45 am

3 stops29h 45m

Petersburg

lör 4/25

11:30 am-6:40 am

2 stops16h 10m

$702

ChicagoPetersburg

ORD - PSG

ORDPSG

Chicago O'Hare Intl

ons 4/22

8:48 pm-2:11 pm

2 stops20h 23m

Petersburg

lör 4/25

11:30 am-6:40 am

2 stops16h 10m

$707

Quickest round-trip

ChicagoPetersburg

ORD - PSG

ORDPSG

Chicago O'Hare Intl

ons 4/22

8:48 pm-2:11 pm

2 stops20h 23m

Petersburg

lör 4/25

2:53 pm-6:40 am

3 stops12h 47m

$716

ChicagoPetersburg

ORD - PSG

ORDPSG

Chicago O'Hare Intl

ons 4/22

8:48 pm-2:11 pm

2 stops20h 23m

Petersburg

lör 4/25

2:53 pm-6:40 am

3 stops36h 47m

$722

ChicagoPetersburg

ORD - PSG

ORDPSG

Chicago O'Hare Intl

ons 4/22

8:48 pm-2:11 pm

2 stops20h 23m

Petersburg

lör 4/25

11:30 am-6:40 am

2 stops16h 10m

$726

ChicagoPetersburg

ORD - PSG

ORDPSG

Chicago O'Hare Intl

ons 4/22

8:48 pm-10:45 am

3 stops40h 57m

Petersburg

lör 4/25

2:53 pm-6:40 am

3 stops12h 47m

$730

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first

How to get the cheapest flight ticket from Illinois to Petersburg, Alaska

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 airline that flies from Illinois to Petersburg?

Alaska Airlines is the most popular carrier operating from Illinois to Petersburg

Cheap Illinois to Petersburg, Alaska flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Petersburg, Alaska

Fastest flight time	20h 23m
Direct flights	None

The fastest flight from Illinois to Petersburg, Alaska takes 20h 23m

There are no direct flights from Illinois to Petersburg, Alaska. There are no popular flight routes from Illinois to Petersburg, Alaska.

Search flight deals

When did momondo last update prices for flights from Illinois to Petersburg Airport?
Prices for flights from Illinois to Petersburg Airport are updated daily.
How old do you have to be to fly from Illinois to Petersburg Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Petersburg Airport.
What documentation or ID do you need to fly to Petersburg Airport?
The required travel and health documents for your Petersburg Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Petersburg Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Petersburg?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Illinois to Petersburg. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Illinois to Petersburg with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Illinois to Petersburg flights to just show those with flexible booking policies.

How can momondo help me find flights from Illinois to Petersburg?

Once you have performed a search for Illinois to Petersburg flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes. momondo can track prices for Illinois to Petersburg flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.