New Trip編集部　更新日: 2026.06.03

Do I need a suitcase lock when traveling abroad? How to choose a TSA lock or other locks

Title

When choosing a suitcase for overseas travel, design and size tend to be the main focus,

In fact, the way you choose your "keys" greatly affects the safety and comfort of your trip.

To answer questions like, "Which lock should I choose for peace of mind?" and "Are TSA locks necessary outside the United States?"

This article provides a thorough explanation of everything from the latest TSA008 standards to how to deal with problems.

Update your knowledge about locks and start preparing for a safe trip with minimal risk of theft or damage.

Title

table of contents

1. Do you need a suitcase lock? Its role when traveling abroad

2. What is a TSA lock? Features and points to note

3. Types and characteristics of TSA lock keys

4. Suitcase lock problems and solutions

5. Recommended suitcases with TSA locks

6. Summary

七、まとめ

＼読者限定 500円OFF／

New Tripのメールマガジンに登録すると、全商品に使える500円OFFクーポンをプレゼント！

クーポンコード：NT500

決済画面で入力するだけで、新しい旅の相棒がお得に手に入ります。 

登録ありがとうございます！

一、海外旅行でスーツケースの鍵は必要？

Locking your suitcase when traveling abroad serves three main purposes:

  • Theft and theft prevention <br> Minimizes the risk of third parties stealing contents in airport backrooms, hotels, and vehicles while in transit.
  • Self-defense to "keep out" illegal drugs <br>This will prevent you from unknowingly having illegal drugs in your possession and becoming involved in a crime (being used as a drug courier). It is an important method for protecting your innocence.
  • Prevents luggage from scattering <br>It prevents zippers and frames from opening unintentionally due to strong impacts during transport, ensuring your luggage arrives safely at its destination.
  • 荷物の飛び出しを防げる

預け荷物は想像以上に強い衝撃を受けます。

New Trip編集部にも、

「到着したらファスナーが半分開いていた」

という相談が寄せられることがあります。

施錠しておくことで、輸送中の不意な開閉を防ぎやすくなります。

  • 自分自身を守るためにも重要

海外では極めて稀なケースですが、第三者が荷物へ不審物を入れるリスクもゼロではありません。

施錠は荷物だけでなく、自分自身を守るための基本的な対策とも言えます。

Title

二、TSAロックとは？普通の鍵との違い

Anyone considering traveling abroad, especially to the United States, has probably heard of "TSA locks." We'll explain in detail why they're so important, how they work, and the latest precautions to take.

TSAロックとは

TSA locks are special locks approved by the U.S. Transportation Security Administration (TSA) that can be unlocked and relocked by TSA officers using a master key during baggage inspection at the airport. They are required for travel to countries that adopt TSA standards, such as the United States, Canada, and Australia .

The main features are as follows:

  • Master key compatible : TSA officers can unlock the suitcase using a dedicated master key. This allows for inspection without damaging the suitcase.
  • There are two types: dial and key. Dial locks are unlocked with a combination number, while key locks use a physical key. As of 2025, dial locks are the most common.
  • Latest standard "TSA008": Currently, the third generation (TSA008), which offers higher security, is the mainstream. New Trip models also comply with this latest standard, enhancing safety.
Title

📚 編集部のメモ：赤い菱形の「TSA」マークと赤い松明のマークともTSAマークです。

Title

三、TSAロックがないとどうなる？

There are several types of security measures for suitcases besides the built-in lock. It's effective to choose the right one for your needs.

TSAロックは海外旅行で必須？

Dial locks are unlocked by entering a number, eliminating the need to carry a key. They can be attached to non-TSA compliant suitcases for international travel. However, be careful not to forget the number. Popular with business travelers and short-term tourists.

Advantages: You don't need to carry keys around, so there's no worry about losing them.

Disadvantages: If you forget your PIN, you won't be able to open it. A 4-digit PIN offers better security than a 3-digit PIN.

行き先 TSAロックの必要性
アメリカ本土 非常に高い
ハワイ 非常に高い
グアム・サイパン 非常に高い
カナダ 高い
ヨーロッパ 推奨
韓国・台湾 推奨
東南アジア 推奨
  • アメリカ方面は必須レベル

アメリカ方面へ行く場合は、TSAロック付きスーツケースを選ぶのが基本です。

TSA非対応モデルをあえて選ぶ理由はほとんどありません。

  • ヨーロッパやアジアでもおすすめ

ヨーロッパやアジアではTSAロックが必須ではありません。

しかし現在はTSAロック付きスーツケースが標準的になっているため、海外旅行用として購入するならTSA対応モデルを選んでおく方が便利です。

最近は「TSA008」が主流

Padlocks are inexpensive and simple, costing around 1,000 to 3,000 yen. They can even be purchased at 100-yen shops, but the risk of losing the key and their low security are drawbacks. They are suitable for domestic travel or low-risk environments (e.g., travel in rural areas of Japan).

Advantages: Inexpensive, readily available everywhere, and easy to replace if the lock breaks.

• Disadvantage: You need to carry a physical key with you, and there is a risk of losing it.

Title

四、海外旅行用スーツケースの鍵はどのタイプがおすすめ？

1位：TSAダイヤルロック

This is a solution for what to do if you lose your key, especially if you use a physical key for your lock.

  • Double-check your belongings: Make sure you haven't checked your pockets, the bottom of your bag, or left anything at the hotel front desk.
  • Availability of a spare key: If you have a spare key at home, consider having a family member send it to you or having it delivered to your accommodation.
  • Consult the airport's "repair shop": Major airports often have lock repair specialists. There's a chance they can unlock your lock with their professional skills.
  • Consult the front desk of your accommodation: Some hotels may be able to introduce you to a locksmith they work with.

2位：TSAキータイプ

Here's what to do if you can no longer open your device using the PIN you set.

  • Trying "all combinations": For a 3-digit dial (000-999), there are 1,000 combinations. If you try one per second, you can check all the numbers in about 15-20 minutes . Surprisingly, this is often the most reliable and fastest solution.
  • Suspect a "misalignment" in the numbers: You may have accidentally moved an adjacent number during setup. Try patterns where the numbers are shifted one position forward or backward from the original number (e.g., if the number is 123, try 023, 223, 113, 133, etc.).
  • List the numbers you might have registered: Take your time to write down any numbers you might use, such as your birthday, the last four digits of your phone number, or numbers you've used before.

Related article : "How to set up TSA lock "

3位：外付け南京錠

This is a case where a malfunction is suspected, such as "the combination is correct and I have the key, but it won't open."

  • Check for foreign objects: Check to see if there is any sand, dirt, or lint stuck in the gaps of the keyhole or dial. Cleaning it with an air duster may fix the problem.
  • Distortion due to packing pressure: If the suitcase is overpacked, excessive pressure may be applied to the lock, causing it to become misaligned and unable to open. Try to unlock the suitcase by gently applying pressure from above.
  • Contact the manufacturer: If the internal components are damaged, it may be difficult to repair it yourself. If it is a New Trip product, please contact the official support desk and request a repair. If it is within the warranty period, we will handle it according to the regulations.

Related article: " New Trip Suitcase Keys and Locks FAQ "

New Trip編集部おすすめのTSAロック付きスーツケース

海外旅行用スーツケースを選ぶなら、鍵だけでなく耐久性や走行性能も重要です。

New Trip 0702PLUS

海外旅行で人気の高いフロントオープンモデル。

  • 最新TSA008ロック搭載
  • YKKファスナー採用
  • ストッパー付き静音キャスター
  • フロントポケット搭載

セキュリティと利便性を両立したモデルです。

New Trip 0702Plus スーツケース

TSA008ロック搭載｜海外・短期出張に最適

New Trip 0702Plus スーツケース

Sサイズ・約42L｜ABS+PC

コインロッカー対応サイズ TSA008ロック YKKファスナー キャスターストッパー

¥21,980

商品を見る
Title

五、海外旅行でよくある鍵トラブルと対処法

鍵をなくした

[TSA008 equipped] New Trip 0702PLUS

The "0702PLUS" is New Trip's flagship model that combines convenience with ironclad protection.

  • Equipped with the latest "TSA008" lock .<br>The latest security standard, "TSA008," has been adopted. The cylinder's precision has been improved, providing ironclad protection for travel to the US and anywhere in the world.
  • Highly reliable "YKK zipper"
    The zipper, a weak spot on many suitcases, is made with high-quality YKK zippers . They not only open and close smoothly, but are also highly durable. Their anti-theft design reduces the risk of sharp objects prying the zipper open.
  • Convenient "Front Opening" Design <br>The front pocket is accessible even when the bag is locked. It allows you to quickly access your laptop up to 15.6 inches , so you won't have to rush through airport security.
  • Silent Casters with Stoppers <br>The latest silent casters are equipped with a stopper function , which prevents your suitcase from rolling away on its own, even on trains or up hills, and keeps it securely in place.

ダイヤル番号を忘れた

3桁ダイヤルなら000〜999まで試す方法がもっとも確実です。

また、設定時のズレによって開かないケースもあります。

旅行前に番号をスマホへ記録しておくことをおすすめします。

TSAロックが開かない

まずは荷物の詰め込み過ぎを疑いましょう。

スーツケース内部の圧力によってロック部分が噛み合わなくなることがあります。

無理にこじ開けず、メーカーサポートへ相談するのが安全です。

🔗 関連記事：『スーツケースのパスワードロックが開かない時の対処法と予防策』

Title

六、FAQ(よくある質問)

Q1. スーツケースにTSAロックがないとどうなる？

A1：アメリカ方面への渡航では、手荷物検査時に鍵が破壊される可能性があります。

Q2. TSAロックは海外旅行で必須ですか？

A2：アメリカ本土・ハワイ・グアム方面では必須レベルです。その他の地域でもTSA対応モデルがおすすめです。

Q3. TSAロックの鍵は自分で持っていますか？

A3：ダイヤル式の場合、鍵穴は検査員用です。利用者は設定した暗証番号で開閉します。

Q4. 海外旅行で鍵をかけないと危険ですか？

A4：必須ではありませんが、盗難防止や荷物の飛び出し防止のため、施錠しておく方が安心です。

Title

まとめ

海外旅行では、スーツケースの鍵は防犯対策として重要な役割を果たします。

特にアメリカ方面へ渡航する場合は、TSAロック付きスーツケースを選ぶのがおすすめです。

これから海外旅行用のスーツケースを購入するなら、容量やサイズだけでなく、ロックの種類にも注目して選んでみてください。

執筆・監修

New Trip編集部
本記事は、スーツケース・旅行用品ブランド「New Trip」の編集部により制作されました。
製品開発やユーザーの声を活かしながら、ユーザーに合ったスーツケースや、旅行・出張をより快適にするアイテムを発信しています。

Store Events

Related articles

Free shipping for orders over 2000 yen

All items from our store are shipped free of charge for purchases over 2,000 yen.

Customer Service

Our top priority is to provide high quality after-sales service.

Product warranty

All products are made with great attention to detail.

Secure Shopping

We integrate secure payment methods to ensure your payments are safe.