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Last updated: 2026.04.17

[2026 Latest] ANA New Regulations & LCC-Compliant Suitcase Size Selection Guide!

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The most common regrets people have when choosing a suitcase are, "It was too big at the airport" or "My souvenirs didn't fit on the way back." Specifically, from May 19, 2026, ANA's domestic flight regulations will be updated, clearly defining the maximum free baggage allowance as a total of 158cm in all three dimensions. The 203cm standard, which was previously permitted on some domestic flights, will effectively be discontinued, and the international standard of 158cm will become the new norm.

This guide, based on New Trip's actual measurement data, explains everything from how to choose the optimal size based on the number of nights, to the latest airline regulations, including those of LCCs.

First, refer to the quick reference table below to find the size that suits your travel style.

S サイズ

15〜40L

1〜2泊向け

三辺合計〜115 cm

機内持ち込み○ 可

158cm基準○ 余裕

目安重量〜4.5 kg

出張日帰りLCC対応

M サイズ

40〜60L

3〜5泊向け

三辺合計116〜135 cm

機内持ち込み× 不可

158cm基準○ 余裕

目安重量4〜4.5 kg

国内旅行近距離海外

L サイズ

60〜100L

5泊〜1週間向け

三辺合計136〜155 cm

機内持ち込み× 不可

158cm基準○ 基準内

目安重量4.8〜5.5 kg

海外旅行家族旅行

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table of contents

1. Suitcase Capacity Guidelines by Number of Nights: What Size is Best for You?

　　・1-4 nights (40-50L)｜Domestic travel, weekend international travel

5 nights to 1 week (60-90L) | Long trips, school trips, family trips

・1 week or longer (90L~) | Studying abroad, business trips abroad, long-term stays

2. Latest for 2026! Airline Baggage Size and Weight Rules Summary

3. Once you've decided on the size, here's how to choose features

　　・Presence/absence of extensions

　　・Front opening

　　・Lightness (dead weight) of the case body

　　・Other useful points

IV. Summary: Choosing the perfect vehicle to support your journey

FAQ (Frequently Asked Questions)

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一、【泊数別】スーツケース容量の目安：あなたに最適なサイズは？

When choosing a suitcase, the most important thing is to select a capacity that suits your trip.

A basic guideline for choosing suitcase capacity is "10 liters per night," but it's safer to choose a slightly larger size when considering bulky winter clothing or souvenirs for the return trip.

Below, we will introduce the optimal capacity for each number of nights and recommended models based on New Trip's actual measurements.

1〜4泊（40〜50L）：国内旅行や週末の海外旅行に

This is the most popular "all-around size" for domestic travel and short-haul international trips to places like Korea and Taiwan.

Its greatest feature is that it's carry-on compatible. You don't need to check it in, which reduces waiting time at the airport, making it ideal for business trips and quick getaways.

However, if you're flying with an LCC, "weight" becomes the biggest hurdle. Airlines like Jetstar and Spring Japan have a limit of 7kg total for the suitcase itself plus personal belongings. If the case itself is heavy, you won't be able to pack much.

Featured Models in This Size of New Trip:

モデル	容量	三辺合計	本体重量	LCC対応
0201 拡張タイプ	40+8L	115cm	2.8kg	◎最軽量
0702Plus フロントオープン	42L	114cm	3.8kg	〇
1302 フロントオープン	40L	112.5cm	4.35kg	△重め

Packing目安：2 shirts, 2 sets of underwear and socks each, a light jacket or cardigan, toiletries, charger, and a foldable umbrella. For business trips, it can also accommodate a 13-14 inch laptop and documents.

5泊〜1週間（60〜90L）：長期の旅行や修学旅行、海外へ

This size is perfect for overseas trips, winter trips, or when you want to consolidate luggage for two people. When using this size, the total weight of your luggage can reach 15-20kg, so the lightness of the case itself and the durability of the casters become crucial.

Furthermore, under ANA's new regulations for 2026, 158cm has been clearly defined as the maximum for free checked baggage. However, all New Trip models in this size range fall within the 158cm limit. Not having to worry about exceeding regulations when choosing a large case is an important factor for long-term use.

New Trip's featured models in this size:

モデル	容量	三辺合計	本体重量	LCC対応
0501 フロントオープン	55+12L	129cm	4.0kg	PC取り出しが楽
0801 拡張タイプ	60+14L	134.5cm	4.0kg	お土産対策に◎
0201Plus 拡張タイプ	60+14L	135cm	4.2kg	多機能＋拡張

Packing Guide: 5-7 days' worth of clothes, heavy coat or jacket, personal medications, multiple pairs of shoes, hair care set, voltage converter.

1週間以上（90L〜）｜留学・海外出張・長期滞在

This is an extra-large size, perfect for trips that require you to move your entire household, such as studying abroad or long business trips. Because of its large capacity, you need to be careful not to exceed weight limits (e.g., 23kg) due to overpacking. The lighter the case itself, the more luggage you can pack.

New Trip standout model in this size:

モデル	容量	三辺合計	本体重量	158cm適合
1101 フレームタイプ	95L	149cm	5.5kg	〇
0211 五輪設計	105L	152.5cm	4.8kg	〇
0502 拡張タイプ	100+19L	154.5cm	5.0kg	〇（拡張後不可）

Packing目安：A full set of daily necessities (bath towels, shampoo, etc.), a large amount of clothing, and 2-3 extra pairs of shoes. If you plan to cook for yourself, also pack retort pouches and seasonings from Japan.

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二、2026年最新！航空会社の荷物サイズ・重量ルールまとめ

When choosing a suitcase, always check the airline's size restrictions. It's especially reassuring to know the carry-on and checked baggage sizes.

Baggage rules vary significantly between airlines and routes.

In particular,ANA domestic flights from May 19, 2026 onwardswill undergo significant changes, so please be sure to check the rules before choosing your luggage size.

Key Points (ANA domestic checked baggage from May 19, 2026)

Size: Total dimensions (length + width + height) within 158cm (including casters and handles) → This is a significant tightening from the previous 203cm limit. If measured over at an automatic baggage drop-off machine, there is a high possibility of incurring an additional fee (approximately 5,500 yen).
Weight: For Economy Class, up to 23kg per bag is free (32kg for Premium Class).
Number of items: For Economy Class, generally up to 2 bags (may be 1 bag depending on the fare type).

・For details, please also refer to ANA's official website:Information on automatic baggage drop-off machines.

For carry-on baggage (ANA/JAL wide-body aircraft)

Total dimensions within 115cm (目安: 55cm × 40cm × 25cm)
Total weight for carry-on baggage + personal items is within 10kg

For LCCs (Peach, Jetstar, etc.)

Many flights have a strict carry-on weight limit of within 7kg.
Since adding checked baggage incurs an extra fee, it is recommended to choose a lightweight suitcase.

Advice from New Trip
All suitcases handled by our store comply with ANA's new 2026 regulations (within 158cm) in actual measurements including casters and handles. However, some models may exceed the limit if checked with the expansion fully extended, so we recommend measuring the size before your return flight if you anticipate buying many souvenirs.

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三、サイズが決まったら次に確認したい機能の選び方

Recommended suitcases for business trips: 20-30 liters for one night, 30-40 liters for two to three nights.
Choosing a size for family trips: For three to four nights, one 80-100 liter suitcase or a 40 liter suitcase.
Points to note for international travel: Consider airline size and weight restrictions, and local transportation.

Once you have an idea of the size, the next step is to choose features based on "how you will use it," which will reduce the chances of making a mistake. This is because even for the same size, usability can vary considerably depending on the features. Especially when considering ANA's new regulations (within 158cm), choosing the right features becomes even more important.

1、拡張機能の有無

If you tend to accumulate souvenirs when returning home, or if you're going on a trip where the amount of luggage is hard to predict, a suitcase with an expansion feature is convenient.

However, when expanded, the total dimensions will increase, so please be sure to choose one with ANA's 158cm standard in mind.

Most of the expandable New Trip models are designed to be well within 158cm even before expansion, so you can use them with peace of mind.

2、フロントオープン（前開き）

Recommended for business trips and short trips where you frequently need to take things out of your luggage during security checks or on the plane.

You can access the contents from the top while the suitcase is upright, so you don't have to bend over, reducing stress while traveling.

3、ケース本体の軽さ（自重）

The lightness of the case itself is very important, especially if you use LCCs or travel frequently between airports and stations.

For example, our 0201 extended type weighs a light 2.8kg, leaving plenty of capacity for your luggage even within LCCs' 7kg limit.

4、その他の便利なポイント

Casters: Silent double casters, etc. → Less noise at airports and stations, smooth movement
Durability: Frame type and sturdy materials → Peace of mind for long-term use
Storage Features: Arrangement of dividers and pockets → Reduces wrinkles in clothes, easy to organize

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四、まとめ：あなたの旅を支える、最適な一台を選ぶために

After May 19, 2026, ANA domestic flights will strictly enforce a checked baggage size limit of 158 cm (total linear dimensions).

This guide provided information on suitable capacities based on the length of your trip, the latest airline rules, and tips for choosing features once you've decided on a size.

All New Trip suitcases are measured to comply with ANA's new 158 cm regulations.

From carry-ons to long-term travel, choose the right suitcase for your travel style and enjoy a comfortable journey.

If there's a model that interests you, please check the product page for more details.

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FAQ(よくある質問)

Q1. 機内持ち込みできるスーツケースのサイズ規定は？

A1：2026年現在、JAL・ANA等の100席以上の機体では「3辺合計115cm以内（例：55×40×25cm）」が基本です。LCC（Peach・Jetstarなど）は「重量7kg以内」が厳格なルール。最近はAI測定機によるチェックが厳しく、キャスターやハンドルを含めた「外寸」での判定が主流です。 New Tripの機内持ち込みモデルは、これら主要各社の規定をクリアする設計ですのでご安心ください。

Q2. ANAの2026年5月からの新規定で、預け入れサイズはどう変わる？

A2：2026年5月19日搭乗分より、ANA国内線の無料預け入れサイズは「3辺の合計が158cm以内」と明確化されます。また、クラス名称が「ファーストクラス（旧プレミアム）」と「エコノミークラス」に変更されます。自動手荷物預け機（Self Bag Drop）ではサイズ判定が非常に厳密になるため、Lサイズをご検討の方は、158cm以内に収まるNew TripのLサイズモデルが最も安全な選択です。

Q3. 158cmを超えるスーツケースを預ける場合、追加料金はかかる？

A3：はい、多くの航空会社で「オーバーサイズ料金（超過料金）」が発生します。ANAの新規定でも158cmを超える場合は別途料金の対象となります。「国内線は203cmまで大丈夫」という旧来のイメージで特大サイズを購入すると、国際線や2026年以降の新運用で思わぬ出費に繋がるため、汎用性の高い158cm以内モデル（New Trip Lサイズ）を推奨しています。

Q4. 拡張機能付きスーツケースは、広げた状態で機内持ち込みできる？

A4：拡張した状態では、多くの航空会社で機内持ち込みサイズをオーバーしてしまいます。基本は「拡張前（ファスナーを閉じた状態）」で機内に持ち込み、旅先でお土産が増えたら「拡張して預け入れ荷物にする」という使い分けがベストです。New Tripの拡張モデルは、この柔軟な使い分けを想定して設計されています。

Q5. フロントオープン機能は、サイズ選びにどう影響する？

A5：フロントオープンは、特に「機内持ち込み（Sサイズ）」で威力を発揮します。サイズそのものは変わりませんが、移動中の荷物の出し入れのためにケースを全開にする必要がないため、狭い空港ロビーや新幹線の座席でも場所を取りません。「コンパクトに旅をしたいけれど、荷物へのアクセスは妥協したくない」という方に最適な選択肢です。

Q6. 海外旅行（1週間以上）なら、どのサイズが一番失敗しない？

A6：**「容量90L前後」かつ「3辺合計158cm以内」**のモデルが最も失敗しません。この基準なら、ANA/JALだけでなく海外の主要航空会社でも無料預け入れの範囲内に収まります。 New TripのLサイズは、この「国際標準」をクリアしつつ、軽量で頑丈な素材を採用しているため、お土産をたくさん詰めても重量制限をクリアしやすくなっています。

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