Kosai Vacations from $1,387

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Your Kosai Vacation

Well known for its coastal scenery and unspoiled nature, Kosai is an excellent getaway destination. Book one of our Kosai vacation packages and uncover all that this lively city has to offer. If sightseeing is on the to-do list during your trip to Kosai, swing by leading attractions like Maisaka Beach, Arai Beach and Sakichi Toyoda Memorial House. No matter your travel plans or the size of your budget, organizing a tailored Kosai vacation is a piece of cake with Expedia.

The Latest Kosai vacation packages

Price found within the past 48 hours. Click for updated prices.
Cider Barn &more

Cider Barn &more

2.5 out of 5
per person
Sep 30 - Oct 3
found 16 hours ago
Roundtrip flight included
Chicago (CHI) to Nagoya (NGO)
No reviews
Hotel Kusakabe Armeria

Hotel Kusakabe Armeria

4 out of 5
per person
Sep 30 - Oct 3
found 16 hours ago
Roundtrip flight included
Chicago (CHI) to Nagoya (NGO)
8.4/10 Very Good! (296 reviews)
Fourth or fifth time here. Everything as perfect as before

Reviewed on Feb 11, 2023

Iwamurasansou

Iwamurasansou

3 out of 5
per person
Sep 30 - Oct 3
found 16 hours ago
Roundtrip flight included
Chicago (CHI) to Nagoya (NGO)
No reviews
Glamping Hoshigaminomori

Glamping Hoshigaminomori

3 out of 5
per person
Sep 30 - Oct 3
found 16 hours ago
Roundtrip flight included
Chicago (CHI) to Nagoya (NGO)
10/10 Exceptional! (1 review)
Tsuzuya Village

Tsuzuya Village

3 out of 5
per person
Sep 30 - Oct 3
found 16 hours ago
Roundtrip flight included
Chicago (CHI) to Nagoya (NGO)
No reviews
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Discover the most popular places to visit in Kosai

Arai Beach

Why not spend a carefree afternoon at Arai Beach during your travels in Kosai?

Arai Beach

Arai Benten Beach

Why not spend a carefree afternoon at Arai Benten Beach during your travels in Kosai?

Arai Benten Beach

Myoryuji Temple

You can learn about the history of Kosai with a visit to Myoryuji Temple. Stroll along the lakeside or experience the area's festivals.

Myoryuji Temple

Kosai Hotel Deals

Hotel Route Inn Hamanako
Hotel Route Inn Hamanako
3 out of 5
1049-1, Komi, Kosai, Shizuoka-ken
$77 nightly
The price is $84 total per night from Jul 23 to Jul 24
$84 total
Jul 23 - Jul 24
8/10 Very Good! (174 reviews)
"宿泊者が多いので、朝食は時間をずらした方がいいです。"

Reviewed on May 15, 2025

Hotel Route Inn Hamanako
Tabist Kosai Hamanako no Yado
Tabist Kosai Hamanako no Yado
2 out of 5
1253-1 Ochiba, Kosai, Shizuoka
$32 nightly
The price is $35 total per night from Jul 13 to Jul 14
$35 total
Jul 13 - Jul 14
6.8/10 (44 reviews)
Good overall
"It's was really good, I forgot to ask for an early check-in but theh saw me sitting outside waiting let me check in early which was super nice, I did nock to ask if I could leave my bags but the only staff there at the time was deaf, so that's okay. The room was good and comfy and warm. And the bath ..."

Reviewed on Feb 10, 2025

Tabist Kosai Hamanako no Yado
Dormy Inn EXPRESS Toyohashi Hot Spring
Dormy Inn EXPRESS Toyohashi Hot Spring
3 out of 5
118, Toyohashi, Aichi-ken
$68 nightly
The price is $75 total per night from Jul 30 to Jul 31
$75 total
Jul 30 - Jul 31
8.8/10 Excellent! (110 reviews)
Amazing
"We stayed one night. The room is comfortable and big, and the Onsen is beautiful. The breakfast was delicious with many options to choose from ( mostly Japanese breakfast style)"

Reviewed on May 3, 2025

Dormy Inn EXPRESS Toyohashi Hot Spring
See all 182 properties in Kosai
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.

Find the Best Kosai Vacation Packages

Kosai Beach Vacation

Forget about the stresses of daily life and let your mind, body and soul unwind on your Kosai vacation. There's nothing more invigorating than a cool ocean breeze and the soothing sound of waves crashing onto the shore. Organize your trip to Kosai the easy way by locking in one of our Kosai vacation packages. Many people decide to base themselves near Arai Benten Beach, a local highlight only 4 miles (7 km) from the city center.

Things You Should Know About Kosai

  • If you've been dreaming of that seaside lifestyle, check out our Kosai beach hotels. Water views and salty sea air — what more could you want?
  • Our hotels, like The Villa Hamanako and Kuretake Inn Hamanako, are a hit with visitors of all types. Check out the facilities and get ready for your vacation in Kosai!
  • Around 43,700 people live in Kosai. If you'd like some tips about what to see and do around these parts, why not chat to a couple of the locals? Our Kosai things to do page is also a handy source of information.
  • Kosai vacation deals are one of the best ways to save on incredible experiences. Some ideas, such as Arai Benten Beach, Myoryuji Temple and Ogaji Temple, should be at the very top of your to-do list.

Kosai Essential Information

Language
Japanese
Currency
Japanese yens
Local Welcome
Konnichiwa
Local Goodbye
Sayōnara
Population
43,700
Max Temp Winter
50ºF
Max Temp Summer
80ºF
Top Sights
Hamanako Palpal Theme Park, Hamamatsu Castle and Hamamatsu City Zoo

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Frequently asked questions

How much does a Kosai vacation package cost?
You can grab a vacation package to this top destination from $1,387 on Expedia. However, how much your vacation to Kosai costs will depend on the season, length of stay and hotel choice.
What are the cheapest months to go to Kosai?
You can generally find reduced prices and greater availability in December, January and February. Take a look at our cheap Kosai vacation packages and you could score some excellent off-season deals.
How many days is enough for Kosai?
The ideal duration for your Kosai vacation depends on what you'd like to see. Typically, a handful of days to a week will give you enough time to check out all the main sights and discover some hidden spots along the way.
How to find the best Kosai package deals?
Begin your search for a Kosai package deal by entering your destination and preferred travel dates under our "Packages" tab. Then select some filters, like "Property type" and "Guest rating," to fine-tune the results to your exact needs. You can also sort by "Package discount" and browse offers that come with unbeatable savings. If you don't find the perfect Kosai package deal right away, just tweak your dates and search again. Remember that deals are only available for a limited time, so book early and get your Kosai getaway off to a flying start.
Is it cheaper to book a Kosai vacation as a package?
You can enjoy significant savings on your Kosai break by booking a tailored vacation package. Check the "Package" heading, then select your travel dates and destination to view some great hotel prices and airfares. Bundle everything into a great-value package and you can save hundreds of dollars. Consider adding a car rental and you may land a better deal.
When to book a vacation package to Kosai?
If you've got your Kosai vacation dates confirmed, book early to grab some awesome deals. With Expedia, you can generally reserve some flights up to one year in advance. Prefer spontaneous trips? Our last-minute deals are ideal for traveling on a whim.
Does Expedia offer Book Now, Pay Later Kosai vacation packages?
Jet off on your dream getaway to Kosai with help from our Book Now, Pay Later vacations. There's no need to save like crazy or wait until the next payday --- we've partnered with online lender Affirm to offer you financial flexibility. Our vacation packages with payment plans allow you to spread the cost over 3, 6 or 12 months. With no late payment fees or hidden charges, you can easily stick to your budget and snag great deals while they last.
* Savings based on package bookings compared to the price of the same components booked separately. Savings not available on all packages.