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Cheap flights from Rhode Island to Kos from $636

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Rhode Island to Kos departing on 7/5. 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
0 bags

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Find the cheapest flights from Rhode Island to Kos

Cheap round-trip flights

Enter your travel dates to find the best prices.
SWISS Logo
5:20 pm - 7:55 pm
BOS
-
KGS
19h 35m
1 stop
SWISS Logo
11:00 am - 3:10 pm
KGS
-
BOS
35h 10m
1 stop
$973SWISS
Tue, Sep 8 - Thu, Sep 17
Multiple Airlines Logo
5:10 pm - 8:20 pm
BOS
-
KGS
20h 10m
1 stop
Multiple Airlines Logo
11:00 am - 3:10 pm
KGS
-
BOS
35h 10m
1 stop
$980Multiple Airlines
Wed, Sep 9 - Thu, Oct 1
Austrian Airlines Logo
5:10 pm - 8:20 pm
BOS
-
KGS
20h 10m
1 stop
Austrian Airlines Logo
8:50 pm - 1:50 pm
KGS
-
BOS
24h 00m
1 stop
$982Austrian Airlines
Wed, Sep 9 - Mon, Sep 14
Austrian Airlines Logo
2:19 pm - 8:20 pm
BOS
-
KGS
23h 01m
2 stops
Austrian Airlines Logo
8:50 pm - 1:50 pm
KGS
-
BOS
24h 00m
1 stop
$987Austrian Airlines
Wed, Sep 9 - Mon, Sep 14
Lufthansa Logo
8:05 pm - 7:05 pm
BOS
-
KGS
16h 00m
1 stop
Lufthansa Logo
9:45 am - 11:54 pm
KGS
-
BOS
45h 09m
2 stops
$1,020Lufthansa
Tue, Sep 8 - Mon, Sep 14
Lufthansa Logo
8:05 pm - 7:05 pm
BOS
-
KGS
16h 00m
1 stop
Lufthansa Logo
7:55 pm - 8:10 pm
KGS
-
BOS
31h 15m
2 stops
$1,023Lufthansa
Tue, Sep 8 - Wed, Sep 30
SWISS Logo
9:40 pm - 8:00 pm
BOS
-
KGS
15h 20m
1 stop
SWISS Logo
8:30 pm - 7:55 pm
KGS
-
BOS
30h 25m
1 stop
$1,033SWISS
Fri, Sep 11 - Tue, Sep 29
Austrian Airlines Logo
5:10 pm - 8:50 pm
BOS
-
KGS
20h 40m
1 stop
Austrian Airlines Logo
8:50 pm - 1:50 pm
KGS
-
BOS
24h 00m
1 stop
$1,042Austrian Airlines
Thu, Sep 10 - Mon, Sep 14
Austrian Airlines Logo
12:34 pm - 8:20 pm
BOS
-
KGS
24h 46m
2 stops
Austrian Airlines Logo
9:40 pm - 1:50 pm
KGS
-
BOS
23h 10m
1 stop
$1,047Austrian Airlines
Wed, Sep 9 - Fri, Sep 18
Lufthansa Logo
8:05 pm - 7:05 pm
BOS
-
KGS
16h 00m
1 stop
Lufthansa Logo
9:40 am - 3:40 pm
KGS
-
BOS
13h 00m
1 stop
$1,049Lufthansa
Tue, Sep 8 - Sat, Oct 3

SWISS flights from Rhode Island to Kos

Our best SWISS deals on Rhode Island to Kos flight tickets
SWISS
Sep 8
BOS5:20 pmBoston Logan Intl
19h 35m
1 stop
KGS7:55 pmKos
Sep 17
KGS11:00 amKos
35h 10m
1 stop
BOS3:10 pmBoston Logan Intl
$973
SWISS
Sep 11
BOS9:40 pmBoston Logan Intl
15h 20m
1 stop
KGS8:00 pmKos
Sep 29
KGS8:30 pmKos
30h 25m
1 stop
BOS7:55 pmBoston Logan Intl
$1,033
SWISS
Sep 11
BOS9:40 pmBoston Logan Intl
15h 20m
1 stop
KGS8:00 pmKos
Sep 18
KGS3:55 pmKos
30h 15m
1 stop
BOS3:10 pmBoston Logan Intl
$1,093

Austrian Airlines flights from Rhode Island to Kos

Our best Austrian Airlines deals on Rhode Island to Kos flight tickets
Austrian Airlines
Sep 9
BOS5:10 pmBoston Logan Intl
20h 10m
1 stop
KGS8:20 pmKos
Sep 14
KGS8:50 pmKos
24h 00m
1 stop
BOS1:50 pmBoston Logan Intl
$982
Austrian Airlines
Sep 9
BOS2:19 pmBoston Logan Intl
23h 01m
2 stops
KGS8:20 pmKos
Sep 14
KGS8:50 pmKos
24h 00m
1 stop
BOS1:50 pmBoston Logan Intl
$987
Austrian Airlines
Sep 10
BOS5:10 pmBoston Logan Intl
20h 40m
1 stop
KGS8:50 pmKos
Sep 14
KGS8:50 pmKos
24h 00m
1 stop
BOS1:50 pmBoston Logan Intl
$1,042

momondo Fare Finder

 
Customize your flight search to find flights from Rhode Island to Kos 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 May 9, 2026.
Use the filters below to find and compare flights from Rhode Island to Kos that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonKos

BOS - KGS

BOSKGS

Boston Logan Intl

Tue 9/8

5:20 pm-7:55 pm

1 stop19h 35m

Kos

Thu 9/17

11:00 am-3:10 pm

1 stop35h 10m

$973

BostonKos

BOS - KGS

BOSKGS

Boston Logan Intl

Wed 9/9

5:10 pm-8:20 pm

1 stop20h 10m

Kos

Thu 10/1

11:00 am-3:10 pm

1 stop35h 10m

$980

BostonKos

BOS - KGS

BOSKGS

Boston Logan Intl

Wed 9/9

5:10 pm-8:20 pm

1 stop20h 10m

Kos

Mon 9/14

8:50 pm-1:50 pm

1 stop24h 00m

$982

BostonKos

BOS - KGS

BOSKGS

Boston Logan Intl

Wed 9/9

2:19 pm-8:20 pm

2 stops23h 01m

Kos

Mon 9/14

8:50 pm-1:50 pm

1 stop24h 00m

$987

BostonKos

BOS - KGS

BOSKGS

Boston Logan Intl

Tue 9/8

8:05 pm-7:05 pm

1 stop16h 00m

Kos

Mon 9/14

9:45 am-11:54 pm

2 stops45h 09m

$1,020

BostonKos

BOS - KGS

BOSKGS

Boston Logan Intl

Tue 9/8

8:05 pm-7:05 pm

1 stop16h 00m

Kos

Wed 9/30

7:55 pm-8:10 pm

2 stops31h 15m

$1,023

BostonKos

BOS - KGS

BOSKGS

Boston Logan Intl

Fri 9/11

9:40 pm-8:00 pm

1 stop15h 20m

Kos

Tue 9/29

8:30 pm-7:55 pm

1 stop30h 25m

$1,033

BostonKos

BOS - KGS

BOSKGS

Boston Logan Intl

Thu 9/10

5:10 pm-8:50 pm

1 stop20h 40m

Kos

Mon 9/14

8:50 pm-1:50 pm

1 stop24h 00m

$1,042

BostonKos

BOS - KGS

BOSKGS

Boston Logan Intl

Wed 9/9

12:34 pm-8:20 pm

2 stops24h 46m

Kos

Fri 9/18

9:40 pm-1:50 pm

1 stop23h 10m

$1,047
Quickest round-trip

BostonKos

BOS - KGS

BOSKGS

Boston Logan Intl

Tue 9/8

8:05 pm-7:05 pm

1 stop16h 00m

Kos

Sat 10/3

9:40 am-3:40 pm

1 stop13h 00m

$1,049

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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See travel insights to Kos from

How to get the cheapest flight ticket from Rhode Island to Kos

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 Rhode Island to Kos?

Brussels Airlines is the most popular carrier operating from Rhode Island to Kos

Cheap Rhode Island to Kos flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Rhode Island to Kos

Fastest flight time

14h 49m

Direct flights

None
The fastest flight from Rhode Island to Kos takes 14h 49m
There are no direct flights from Rhode Island to Kos. There are no popular flight routes from Rhode Island to Kos.
Search flight deals

Frequently asked questions about flying from Rhode Island to Kos

  • When did momondo last update prices for flights from Rhode Island to Kos Airport?

    Prices for flights from Rhode Island to Kos Airport were last updated today.

  • How old do you have to be to fly from Rhode Island to Kos 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 Rhode Island to Kos Airport.

  • What documentation or ID do you need to fly to Kos Airport?

    The required travel and health documents for your Kos 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 Kos Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling to a place near Kos?

Book flights to Kos if you plan to visit one of these locations
Kardamena
Marmari

Why use momondo?

Why should I use momondo to find a flight deal from Rhode Island to Kos?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Kos from Rhode Island.

Can I find flights from Rhode Island to Kos with flexible booking policies on momondo?

Yes. All flights to Kos from Rhode Island on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Rhode Island to Kos?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Kos from Rhode Island.

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

If you are simply researching potential flights to Kos, momondo offers a useful price alert feature which will track prices for flights to Kos from Rhode Island and alert you when they change.

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