Cheap flights from Seattle to Belleville from

Trusted by millions

Kiwi.com Guarantee for stress-free travel

One search, all the best deals

Explore flight deals to Belleville

How much do flights to Belleville cost?

Key info about flying to Belleville

Depart from
Seattle–Tacoma International
Arrive to
MidAmerica St. Louis
Average flights per week
101
Flight distance

Check-in for a flight from Seattle to Belleville

NameCarrier codeIATA CodePassport needed during booking
Allegiant AirAAYG4No
Alaska AirlinesASAASNo
Frontier AirlinesFFTF9No
Spirit AirlinesNKSNKNo
Sun Country AirlinesSCXSYYes

Weather in Belleville

Average Weather

MonthAverage monthly max temperatureAverage monthly min temperature
January3°C-3°C
February6°C-2°C
March13°C3°C
April18°C8°C
May23°C14°C
June29°C19°C
July30°C20°C
August29°C19°C
September26°C16°C
October19°C10°C
November12°C3°C
December7°C0°C
Hottest Month
30°C
July
Coldest month
-3°C
January
Sunny days
264
days per year
Snow days
9
days per year

14 day forecast

Saturday
17 May
24°C15°C
24 May
83%
25°C14°C
Sunday
18 May
19°C13°C
25 May
88%
26°C18°C
Monday
19 May
88%
21°C15°C
26 May
89%
18°C14°C
Tuesday
20 May
83%
30°C18°C
27 May
21°C11°C
Wednesday
21 May
89%
14°C12°C
28 May
22°C12°C
Thursday
22 May
88%
14°C9°C
29 May
24°C13°C
Friday
23 May
19°C8°C
30 May
89%
26°C16°C
Travelers usually depart from Seattle–Tacoma International, or Kenmore Air Harbor Seaplane Base when they travel from Seattle to Belleville. The most popular airlines for this route are Allegiant Air, Alaska Airlines, Frontier Airlines, Spirit Airlines, and Sun Country Airlines. Seattle and Belleville have 101 direct flights per week.

Frequently asked questions

What are the most popular routes to and from Seattle?
What are the most popular routes to and from Belleville?
Which airports are there in Seattle?
What airports are near Seattle?
What airports are near Belleville?
Which airlines fly between Seattle and Belleville?
When’s the best time to travel between Seattle and Belleville?
What flights operate between Seattle and Belleville?
How many airports are there near Seattle?
How many airports are there near Belleville?
What time do nonstop (direct) flights between Seattle and Belleville depart?
What time do nonstop (direct) flights between Seattle and Belleville arrive?
What time do flights between Seattle and Belleville depart?
What time do flights between Seattle and Belleville arrive?

Explore alternative trips

Flights from Seattle

Flights to Belleville

Popular routes

The nearest countries with flights to Belleville

Here is a list of countries people are flying from

Other destination countries from Seattle

Here is a list of countries people are flying to
Find the best connection from Seattle to Belleville
Search flights

Get more out of Kiwi.com with our mobile application

Download boarding passes

One-click booking

Get exclusive offers and prices

Mobile trip notifications


We hack the system,
you fly for less